Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e70826e336e73f…

MALICIOUS

PDF

70.6 KB Created: 2021-03-06 15:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7d27731ee770cb379161a6127c7edaf3 SHA-1: 8ec5abdec0ab9ad0074333d6c1b4b53da79a787e SHA-256: f1e70826e336e73f7dd40cfcd89e8a3988d5cfe4592fbad24ee246316d129d3a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/award?keyword=how+to+clear+fault+on+micrologix+1400 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4469641/normal_6003426d7e754.pdfIn PDF document text
    • http://emirofficialzm.com/nfpa_25_free_downloadhlrfn.pdfIn PDF document text
    • http://nubolats.xyz/68255642997cjn2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_602db3c929b73.pdfIn PDF document text
    • http://topcabinets.xyz/blackstar_id_core_amp_reviewvd1yg.pdfIn PDF document text
    • http://sodalabs.club/mupipejejijilukeipg3a.pdfIn PDF document text
    • https://bokozimub.weebly.com/uploads/1/3/5/3/135326123/rumitudiropit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_5fe8fd3d92716.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/buzedinuzorasetesizotu.pdfIn PDF document text
    • http://trenolgia.buzz/91597218765nsino.pdfIn PDF document text
    • http://knitfqph.site/suwisegegizexuneto5c05g.pdfIn PDF document text
    • https://jonokiruvonanum.weebly.com/uploads/1/3/5/3/135319333/wubopotogetefed.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/1b02953000.pdfIn PDF document text
    • http://lorozetuwivu.medianewsonline.com/furman_or_panamax.pdfIn PDF document text
    • https://gimimelaxagoke.weebly.com/uploads/1/3/2/7/132740951/viwowenelefufatuz.pdfIn PDF document text
    • http://gromstroy.com/how_to_get_a_knot_out_of_a_yoyo_string0z8g5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_602e2e5e70554.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/kovilowab/lafipalituzedexibixata.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/indian_colors_tv_channel.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/93365108375.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/1981_honda_express_2_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/75276908706.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_off0000d708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD708 5428 bytes
SHA-256: 44056eb717515acf70768b27d5be72bb65243cbb574853b49c27616962d179c5
font_01_sfnt_off0000e98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98B 10300 bytes
SHA-256: 74c97c314c2a45cca5a6f4b5fb32973bfc455b60fe60c17d1de7374dc10cfe02

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