Malicious PDF — malware analysis report

Static analysis result for SHA-256 9274b7686626c846…

MALICIOUS

PDF

66.6 KB Created: 2021-02-27 23:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 90e37ed91432c98e3b75c90433aa8d68 SHA-1: 2102cc4973e9875a016eecb6a885e3a83131ddb4 SHA-256: 9274b7686626c846984b9148d0c738c2e0edba4092c9cd4a3990c77b1fe65587
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9603

Heuristics 4

  • 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 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
  • 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://vilenefex.ru/aws?utm_term=samsung+smart+led+tv+50+inch+4k+price+in+india PDF link annotation
    • https://xikoroto.weebly.com/uploads/1/3/4/3/134338579/b81655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411701/normal_6003eada35bf3.pdfIn PDF document text
    • https://cdn.sqhk.co/kofosenolo/Yjc4hiw/tawegarufomowibefawibok.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/Igighgd/world_record_for_fastest_bowling_ball_thrown.pdfIn PDF document text
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/2172362.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5ff043713c077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_60132fd4bcb69.pdfIn PDF document text
    • http://test123test.xyz/44991937017uqzkj.pdfIn PDF document text
    • https://zevixaxilifudex.weebly.com/uploads/1/3/4/1/134131629/zurinegi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_5fca12a8e09a4.pdfIn PDF document text
    • https://cdn.sqhk.co/sategexarom/hrjfSgd/laralexu.pdfIn PDF document text
    • https://deduxujixonegox.weebly.com/uploads/1/3/4/7/134731806/fejuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_60143a19b53bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469863/normal_5fd9267d380fc.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/jifogi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/craftsman_professional_aluminum_motorcycle_atv_jack_manual.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85B 6068 bytes
SHA-256: 11851e66d3ae7b4e73514e509aa744ed803078629874928eb876852439bcf5d4