Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2121ca515a8c567…

MALICIOUS

PDF

71.1 KB Created: 2021-02-20 00:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6f058c0da265a878cc548c75dc3a949a SHA-1: c05a3ae9372c930d006ae46d6242fb84110bc925 SHA-256: b2121ca515a8c567fe0ea95cd145b64dba6d4a890c56e08d4e7d709032340800
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://baarspo.ru/123?utm_term=tolstoy+war+and+peace+movie PDF link annotation
    • https://zikawudewodag.weebly.com/uploads/1/3/4/5/134585044/sapumatiweg.pdfIn PDF document text
    • https://meripowubizaj.weebly.com/uploads/1/3/5/9/135959363/81edae212b.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/Xzrwjff/kitchen_family_room_design_pictures.pdfIn PDF document text
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/16208dc29a04b.pdfIn PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/daccee8f.pdfIn PDF document text
    • http://pmaider.com/wexugadudanunaxagozebuushmc.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/aq3hghg/baby_and_toddler_growth_spurt_ages.pdfIn PDF document text
    • https://wokawopirajer.weebly.com/uploads/1/3/3/9/133999547/2146607.pdfIn PDF document text
    • https://sosuxivi.weebly.com/uploads/1/3/6/0/136056733/lipijisem.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatagemi/eh6Gvid/77545718906.pdfIn PDF document text
    • http://cadenalia.com/dodopakevugeduzeb5s8sc.pdfIn PDF document text
    • https://jigotofobab.weebly.com/uploads/1/3/5/3/135300724/joxosebovin-xikepurifuw-wevikale.pdfIn PDF document text
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/timulimipowene.pdfIn PDF document text
    • https://biluvumilu.weebly.com/uploads/1/3/1/8/131860938/6920579.pdfIn PDF document text
    • https://faruroju.weebly.com/uploads/1/3/5/9/135986438/733ace246ca9.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_off0000d902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD902 5420 bytes
SHA-256: 2566ff0a55d110d562d887481a80b2067ec9ceef9c644cbfae10e8dd716d1503
font_01_sfnt_off0000eb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB77 10664 bytes
SHA-256: 7aa07b7c10b3150671bbc5e15abadbdfa60089f44f6966fb17b368b6b8a1054b