Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4db7e54191d3da0…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 03:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 36426950f1c3d9185005d490f763927e SHA-1: 1c50184c27d915a7d3512cc0b51e3d8b432fa588 SHA-256: d4db7e54191d3da010067c72591e6dfdc8bdb882bdf8d0008cf0c385b7c85ccb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zajinet.ru/wix?keyword=kitchenaid+artisan+service+manual PDF link annotation
    • https://jefibapo.weebly.com/uploads/1/3/2/7/132712451/3686164.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/zigawevop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_602b3f6f27cb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366017/normal_5ffd773230cb0.pdfIn PDF document text
    • https://wabelurotetef.weebly.com/uploads/1/3/4/6/134693048/lajogapuz.pdfIn PDF document text
    • https://watuxiso.weebly.com/uploads/1/3/2/7/132740831/laxevexedelaj.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/why_does_emma_bovary_kill_herself.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/dcd7eee.pdfIn PDF document text
    • http://suziterunedoloj.sportsontheweb.net/how_to_change_a_honda_lawn_mower_wheel.pdfIn PDF document text
    • https://jubaluwaruzazux.weebly.com/uploads/1/3/2/7/132740890/mixisakawalapexofus.pdfIn PDF document text
    • http://talemine.getenjoyment.net/mechanical_project_engineer_job_in_melbourne.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493209/normal_5fc93ef6c8f19.pdfIn PDF document text
    • https://lekusimije.weebly.com/uploads/1/3/1/3/131383821/2335829.pdfIn PDF document text
    • https://kagozekexep.weebly.com/uploads/1/3/5/9/135956698/2894458.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480732/normal_5ffeb49865be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493881/normal_5fea19d2d0c6b.pdfIn PDF document text
    • https://lifulufo.weebly.com/uploads/1/3/1/3/131379971/7489217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/man_of_sorrows_chords_ellie_holcomb.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_off0000df18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF18 5208 bytes
SHA-256: b54f75948f18275be064dde3669436b711b099f15405ec6ea6c04271f790175d
font_01_sfnt_off0000f0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AF 10028 bytes
SHA-256: 9bd6d6a6fccb40df2a538b95c63e3f548ac16a5c52491a02a4c245af4ca5e6c8