Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ae2bb5a6638ff5…

MALICIOUS

PDF

79.4 KB Created: 2021-03-02 17:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6c3092ee5991a69129069b8e05458525 SHA-1: 161d8bdee37a0a1b514b3816ebbeb7a61c1c3d28 SHA-256: b0ae2bb5a6638ff5f5eea19041ccea4b381c0038d2e0f08500f2e06286107079
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=marcel+proust+a+la+recherche+du+temps+perdu+english PDF link annotation
    • https://xizavuxovom.weebly.com/uploads/1/3/3/9/133986710/zokitewezafi.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/php_for_dummies_book.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/jflNbgO/22448859390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_6010d316ab48f.pdfIn PDF document text
    • http://tanemazijafawin.medianewsonline.com/lanefovakiwuvi.pdfIn PDF document text
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/863052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452400/normal_6024a116a72d7.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/hphjDja/newazodu.pdfIn PDF document text
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/0fb801606b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_601fa95fb69a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_5fd98149eafe4.pdfIn PDF document text
    • https://regogugone.weebly.com/uploads/1/3/4/8/134891767/jebelotizos.pdfIn PDF document text
    • http://luziniwanemek.sportsontheweb.net/is_allegiant_movie_different_from_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fef5fadd8b85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473938/normal_6033282ca4925.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF452 5492 bytes
SHA-256: 8610e31899e940fb3e6dbe35b74e6945cc2f17efaf99c3cc38ef4db855fa5233
font_01_sfnt_off000106db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DB 12908 bytes
SHA-256: 4890f77fa03fb6b43f903a848188b7e010e4ef423424df8665d73152e38d6fc3