Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 7d085f65fbbb666c…

MALICIOUS

PDF / .VIR

435.5 KB Created: 2023-01-20 01:28:09 Authoring application: Scribus First seen: 2024-04-28
MD5: b7bf1be2cb8c218675a44a758c08df99 SHA-1: ca63e9ce63d10c314f75fba6731bac0c2adf97f6 SHA-256: 7d085f65fbbb666c6a79f02a26ae76fa2e8e7394810cf3cd5c3fb2946efb50e6
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6974

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://adservice.google.com.sb/ddm/clk/300948314;127869103;e;;%3F//img1.wsimg.com/blobby/go/0a09a0e9-c0e0-447a-9e31-b2322bfde8e7/downloads/7684227299.pdf In PDF document text
    • https://adservice.google.co.th/ddm/clk/466651624;272226156;i;;%3F//img1.wsimg.com/blobby/go/05f9b913-3ec0-472d-a441-2c2e20381d66/downloads/hitchhikers_guide_marvin_quotes.pdfIn PDF document text
    • https://adservice.google.co.mz/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/2f7cba4c-f403-4154-b955-dcce35f8c10a/downloads/antonyms_and_synonyms_examples.pdfIn PDF document text
    • https://adservice.google.com.jm/ddm/clk/425484003;227454619;f;;%3F//img1.wsimg.com/blobby/go/dc181df0-008a-436b-8012-a79335b10e8a/downloads/jumejuliro.pdfIn PDF document text
    • https://adservice.google.com.vn/ddm/clk/466651624;272226156;i;;%3F//img1.wsimg.com/blobby/go/9b1aedf7-96d3-4dbb-85c8-a15a21dfd1d0/downloads/nakosegapaxotetoluturu.pdfIn PDF document text
    • https://adservice.google.com.sb/ddm/clk/310682673;138356009;g;;%3F//img1.wsimg.com/blobby/go/2f7cba4c-f403-4154-b955-dcce35f8c10a/downloads/wobakol.pdfIn PDF document text
    • https://adservice.google.com.bd/ddm/clk/408405163;208572896;n;;%3F//img1.wsimg.com/blobby/go/85fe38bd-9e83-4f7e-8972-a8155bc38dd0/downloads/87384975932.pdfIn PDF document text
    • https://adservice.google.com.bd/ddm/clk/300948314;127869103;e;;%3F//img1.wsimg.com/blobby/go/f9902da9-d165-49db-b8f5-5df7c656e1cf/downloads/marivupevojuzufa.pdfIn PDF document text
    • https://medidog.lovali.co.za/953495522393657112?sodijejixigovugusawaxizafunikuxepazolirubapelof=mugokaxidapazaramurejidafitunamigegusufalagukezisedataforowilabetuponunuwivusifusemabuvapukodofevepenebebavefaxakudivopuwowonuxexofezofobidifidudebozedojaregaradabevajadafobelokidadojewedopakadupejiziripazeguni&keyword=experience+certificate+with+salary+details+format+pdf&milaraledorosufifuzotikebejijazolunifojexoviwegejuravimolukebovupekakojezigataguteromiwudubelovu=girizotusorupixirekonimaxenenedunimufemokaxutegavuliwatetujafibupanifevofemawumobufapisobudewagadonuliliwunojovavunubemevezejumirasoruvivemabIn PDF document text
    • https://medidog.lovali.co.za/953495522393657112?sodijejixigovugusawaxizafunikuxepazolirubapelof=mugokaxidapazaramurejidafitunamigegusufalagukezisedataforowilabetuponunuwivusifusemabuvapukodofevepenebebavefaxakudivopuwowonuxexofezofobidifidudebozedojaregaradabevajadafobelokidadojewedopakadupejiziripaPDF link annotation
    • https://medidog.lovali.co.za/953495522393657112?sodijejixigovugusawaxizafunikuxepazolirubapelof=mugokaxidapazaramurejidafitunamigegusufalagukezisedataforowilabetuponunuwivusifusemabuvapukodofevepenebebavefaxakudivopuwowonuxexofezofobidifidudebozedojaregaradabevajadafobelokidadojewedopakadupejiziripazeguni&keyword=experience+certificate+with+salary+details+format+pdf&milaraledorosufifuzotikebejijazolunifojexoviwegejuravimolukebovupekakojezigataguteromiwudubelovu=girizotusorupixirekonimaxeneneduniPDF link annotation
    • https://adservice.google.fi/ddm/clk/408533097;208818505;l;;%3F//img1.wsimg.com/blobby/go/9b1aedf7-96d3-4dbb-85c8-a15a21dfd1d0/downloads/jolojosolivoxixovege.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/bf7aa113-c99d-415d-8bb3-4fe409f9e1ac/downloads/77589508933.pdfIn PDF document text
    • https://adservice.google.hu/ddm/clk/408405163;208572896;n;;%3F//img1.wsimg.com/blobby/go/26e8dde3-e5dc-4ea3-840e-bcb4d7ed6524/downloads/powewanil.pdfIn PDF document text
    • https://adservice.google.lk/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/ae5a73b3-dedd-4546-a991-94a8219177ab/downloads/81486853830.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/85fe38bd-9e83-4f7e-8972-a8155bc38dd0/downloads/55339638262.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/081e0348-3bf0-4a3e-a723-749adc1aa630/downloads/15328868336.pdfIn PDF document text
    • https://adservice.google.cat/ddm/clk/445204615;249060672;c;;%3F//img1.wsimg.com/blobby/go/da79b248-f0af-4eb8-bd1a-3a54bce5b1fe/downloads/78836907360.pdfIn PDF document text
    • https://adservice.google.mk/ddm/clk/408533097;208818505;l;;%3F//img1.wsimg.com/blobby/go/2d497fcd-1261-400b-a5d6-483d49e77696/downloads/ruwabebaj.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cb7af017-c0ed-4ad9-af3e-23157b4ad2ef/downloads/funujejepuselopuxuwo.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/0a09a0e9-c0e0-447a-9e31-b2322bfde8e7/downloads/13463620635.pdfIn PDF document text
    • https://adservice.google.co.za/ddm/clk/310682673;138356009;g;;%3F//img1.wsimg.com/blobby/go/4b8c1b13-048e-4538-9682-8cf61675ff0c/downloads/11214233279.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/26e8dde3-e5dc-4ea3-840e-bcb4d7ed6524/downloads/21407455765.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/60da3e82-fd81-443d-aa96-7835006cf930/downloads/40212348506.pdfIn PDF document text
    • https://adservice.google.gm/ddm/clk/425484003;227454619;f;;%3F//img1.wsimg.com/blobby/go/cb7af017-c0ed-4ad9-af3e-23157b4ad2ef/downloads/zixudotovumaj.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/4b8c1b13-048e-4538-9682-8cf61675ff0c/downloads/48048906919.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5cbf4888-17f9-4efb-9900-c5ad9cf18f67/downloads/zulavugikewojebupar.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5cbf4888-17f9-4efb-9900-c5ad9cf18f67/downloads/ethernet_ip_protocol_specification.pdfIn PDF document text
    • https://adservice.google.cat/ddm/clk/310682673;138356009;g;;%3F//img1.wsimg.com/blobby/go/85fe38bd-9e83-4f7e-8972-a8155bc38dd0/downloads/biriji.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5cbf4888-17f9-4efb-9900-c5ad9cf18f67/downloads/wigolatiwuwulonon.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cec921ce-3e4b-450c-a342-01cf3812569e/downloads/samsung_m2020_wireless_manual.pdfIn PDF document text
    • https://adservice.google.rw/ddm/clk/425484003;227454619;f;;%3F//img1.wsimg.com/blobby/go/60da3e82-fd81-443d-aa96-7835006cf930/downloads/the_pantokrator_monastery_in_constantinople.pdfIn PDF document text
    • https://adservice.google.co.nz/ddm/clk/295204063;122181591;w;;%3F//img1.wsimg.com/blobby/go/5cbf4888-17f9-4efb-9900-c5ad9cf18f67/downloads/1000_calorie_paleo_meal_plan.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5404c88c-5202-48f0-ba59-6b3010c3e91f/downloads/pawikozaxo.pdfIn PDF document text
    • https://adservice.google.co.nz/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/7b6e09c9-e042-4fb8-94a5-b5400826f4b4/downloads/siguzoseferirubar.pdfIn PDF document text
    • https://adservice.google.cat/ddm/clk/408533097;208818505;l;;%3F//img1.wsimg.com/blobby/go/2d497fcd-1261-400b-a5d6-483d49e77696/downloads/wakipazumisin.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00066a48.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00066a48.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00066a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A48 14556 bytes
SHA-256: 1d2265234c25f02a52eb73ac1a07830256ef124a122d873b68f529cd7b83c026
font_01_sfnt_off00068eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB8 17544 bytes
SHA-256: df7c919015cd2ae758a70d3a2a7d7bc657d97ac3a2a7cc0412df34f6f06ee3d3