Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88bb12e0da52f39…

MALICIOUS

PDF

65.2 KB Created: 2021-01-06 20:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 8dbd0d7b59c82b1697efd057604db977 SHA-1: 0ce38a0bdb59001fc167ebcfdf3f7923612df782 SHA-256: b88bb12e0da52f39a91b97c818c7d4103b426af2ac0a3edda8a9ea93a8a47513
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffset.ru/wb?keyword=winking%20lizard%20macedonia%20delivery PDF link annotation
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/c48f356e.pdfIn PDF document text
    • https://cdn.sqhk.co/gukovafax/GhdFghJ/sokomapuwaduwuw.pdfIn PDF document text
    • https://nimadelafux.weebly.com/uploads/1/3/2/6/132695392/9248889.pdfIn PDF document text
    • https://vedemolo.weebly.com/uploads/1/3/4/7/134702866/6cde5b39ac39c2.pdfIn PDF document text
    • https://gefojepedawe.weebly.com/uploads/1/3/4/4/134478994/f5234387556d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f87b36b7f0f6.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiwuximu/jwgeH62/diwosikezetamek.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/jejash1/basketball_court_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/Cr7GieS/62013550984.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/jeQjgPV/web_for_instagram_login.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/7Agd9jh/zuponirewidezukumese.pdfIn PDF document text
    • https://guxelopadak.weebly.com/uploads/1/3/4/7/134727887/nakami.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/b9cge9r/lobatibasemavozuzulebarak.pdfIn PDF document text
    • https://cdn.sqhk.co/dizoketa/krggYie/sales_business_plan_template_powerpoint_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b1efd9-f6cb-482a-bd42-14f5766a2c06/duxomagotuv.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_off0000c4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A7 5368 bytes
SHA-256: 2dbb87f9374b1a4836067027979c702ad44e1414dcc961c4cde6bcc5111f6209
font_01_sfnt_off0000d6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F9 9708 bytes
SHA-256: 4ec398af4f82f3212323cc391a3ae992503eca055803cc899ed0721eb6d73ac3