Malicious PDF — malware analysis report

Static analysis result for SHA-256 9426607680c90d73…

MALICIOUS

PDF

71.0 KB Created: 2021-02-18 04:12:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f3169112119c7c2e7eed60e14085fc3f SHA-1: 92ca1e415d0d9f7e23aa8aaa275809dc5b74e2be SHA-256: 9426607680c90d73bf5b8ef0bb969982ff4c0be64043981e9da9fe071a9e0a1f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than 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.
  • 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://yafferge.ru/aws?utm_term=how+to+use+lg+air+conditioner+remote In PDF document text
    • http://gdztut.com/diary_template_2019j0wal.pdfIn PDF document text
    • http://bonifacy.site/93207848959vseun.pdfIn PDF document text
    • http://kataeta.club/kundli_software_for_windows_8._1hsk76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fecd36085c87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365662/normal_60003e1397268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_60231452307a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/feliso/cambridge_ket_sample_papers_free.pdfIn PDF document text
    • http://tiriburud.rf.gd/56468060210.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/mazda_aio_android_auto_not_working.pdfIn PDF document text
    • http://tedejokalegiruj.epizy.com/tezupebokagatara.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/asus_rt-ac66u_router_default_password.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/74931352517.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/ruzune.pdfIn PDF document text
    • http://wapudajikipidem.epizy.com/rummy_playing_cards_game.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/a_d_pharma_holdings_annual_report.pdfIn PDF document text
    • http://kopinakitiwodad.rf.gd/metomunanemesavanetaj.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/zuwuzig.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/bikakomotoboleladerexilu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5F 5312 bytes
SHA-256: 79a69b8939744d10e32138659d2ca56d73ed313e3253df0e7b8f363d8deaf4cc
font_01_sfnt_off0000ec67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC67 10204 bytes
SHA-256: 2a1e2eb708610b4bb953df465f4decb964d185f838e8311ba83c879cd8e47bd5

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