Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21047c21386e34a…

MALICIOUS

PDF

59.0 KB Created: 2021-04-01 09:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f7f098b388826570278654dc5bf3d90d SHA-1: 6bd31846a0297d816b0ea5afd71bf734ed66c216 SHA-256: c21047c21386e34a82ee9044af851c7e9cd7b279aba57542e62228f12cafea14
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV. It contains numerous embedded URLs, many of which point to disposable domains or link farms, suggesting a phishing or malware distribution attempt. The presence of external URIs and the 'link farm' heuristic indicate a pattern of directing users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6420

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://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4444853/normal_60118b5c67a12.pdfIn PDF document text
    • https://fuvapele.weebly.com/uploads/1/3/0/7/130738919/soxumi-fumawupufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_6064b59866282.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/solo_strikes_destiny_2w9xgt.pdfIn PDF document text
    • http://draiwenstore.online/wix_oil_filter_for_2007_honda_civic14528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481834/normal_5fe7e77caf00d.pdfIn PDF document text
    • https://dipibuwedaji.weebly.com/uploads/1/3/5/2/135293441/lerurod_perulofeso.pdfIn PDF document text
    • http://bluhgang.best/vitebilobugijiwapan9kcks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5fcaa6ed286b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381287/normal_5fefc11782915.pdfIn PDF document text
    • http://bigowet.xyz/how_to_get_your_rental_history_on_your_credit_reporth1h70.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/jchdjh1/discord_mee6_auto_level_up_bot_tutorial.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387230/normal_5feb064d0fefe.pdfIn PDF document text
    • http://lg-copyrightforms.com/my_samsung_tv_red_light_keeps_flashingn6ps2.pdfIn PDF document text
    • http://securityverifiedservices.com/how_to_put_my_delta_crib_together67cma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501789/normal_5fd7fa1c81811.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/BvHmghj/38338034185.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393345/normal_5fcd3cb0d297e.pdfIn PDF document text
    • http://c-advance.space/10_kinds_of_adjectives_and_examplesrnye2.pdfIn PDF document text
    • http://ketadiets.site/biochar_carbon_sequestration8onvt.pdfIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/0IJhScypsXo/wb?keyword=will%20a%20humidifier%20help%20a%20congested%20babyPDF link annotation