Malicious PDF — malware analysis report

Static analysis result for SHA-256 4156fd01b947a10a…

MALICIOUS

PDF

67.0 KB Created: 2021-02-23 23:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 19e4d34a512f76c194ae03088b1a918b SHA-1: 1a08fa8989338b9e83c4143eede19ab72ccab8ba SHA-256: 4156fd01b947a10af47f462b6ef9ba3a07e5e238810ceb23bcc7daf5c9460ac3
136 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
  • 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.
  • 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://seumenha.ru/123?utm_term=lincoln+electric+weld+pak+hd+180 PDF link annotation
    • https://cdn.sqhk.co/gebunemif/7HZwhal/60703317432.pdfIn PDF document text
    • https://cdn.sqhk.co/ridasozewe/gIUhafY/razewifavevasorijeja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_6023185d74fec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474456/normal_60015c761348b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459629/normal_5ff89c40bb0a6.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/1hhekvW/5644477479.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/ajhUggz/neliwiwi.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/iibjcje/royal_farms_menu_sides.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/f4midih/techcrunch_mobility_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/DDjgcic/11130448963.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/die1vwJ/xuwerafaregi.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/ajWTb54/mufijisowofikugorenusozu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe3ab93470de.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/julaxel/guess_how_much_i_love_you_bunny_large.pdfIn PDF document text
    • http://sujokobuva.rf.gd/kufukivexesu.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_off0000ca0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0A 5468 bytes
SHA-256: 61e1731a300eee44b09c3658ec83c91fe957446229313db5c4109c9cf6ced7e2
font_01_sfnt_off0000dcba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBA 10096 bytes
SHA-256: 798bf71039e70604d6c5d9247971a01839bebfed3ea3f2eafb5a2bc0d83923c3