Malicious PDF — malware analysis report

Static analysis result for SHA-256 0974931946e142bd…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 09:18:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4856279a4b4fc806a1ff3b92a72fb1f3 SHA-1: cb6d10c41ee01c5293360071e8b73db5ba3937ec SHA-256: 0974931946e142bd049825b295275abb438036e17e47ff727b938718715208fd
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://mezovuduw.ru/award?keyword=should+you+get+home+inspection+on+new+construction PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387040/normal_602640cbbb192.pdfIn PDF document text
    • http://fitnesspack.net/2018_lexus_es_350_hybrid_mpgvpf9q.pdfIn PDF document text
    • https://suzavopuwo.weebly.com/uploads/1/3/4/6/134686694/6771370.pdfIn PDF document text
    • https://tumopododekup.weebly.com/uploads/1/3/2/6/132696021/3d8be237a40ead.pdfIn PDF document text
    • https://kebumemimax.weebly.com/uploads/1/3/1/6/131636814/widulivokarugi.pdfIn PDF document text
    • https://cdn.sqhk.co/rukububibon/jbjeia8/nba_live_stream_free_lakers_vs_miami.pdfIn PDF document text
    • https://vofitusu.weebly.com/uploads/1/3/5/3/135301199/3520145.pdfIn PDF document text
    • http://kupiokno.su/raguluxibogh5u0.pdfIn PDF document text
    • http://interbank.link/25828959327k6km7.pdfIn PDF document text
    • http://soinjaga.ru/the_dialectical_behaviour_therapy_skills_workbook_for_ptsdsphev.pdfIn PDF document text
    • https://sajofagexureleb.weebly.com/uploads/1/3/4/6/134652103/kurojuletu-lumitidal.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/a1jjAij/gawixo.pdfIn PDF document text
    • https://cdn.sqhk.co/siganewita/jeicIkG/laxisagonosowidixumuxe.pdfIn PDF document text
    • http://interstart.online/28596546214558le.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/fajetufekejo/90592309482.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_off0000e04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04C 5572 bytes
SHA-256: 4b1b1bda5d1e21fd5730ac828ca31463f263b3b791fbef09b3661d76259528f8
font_01_sfnt_off0000f337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF337 10680 bytes
SHA-256: e43561622d8627377f8d868a539566d23cfd45bca26c39efdacb45b6fcd41407

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