Malicious PDF — malware analysis report

Static analysis result for SHA-256 484669043624aa0d…

MALICIOUS

PDF

68.4 KB Created: 2021-05-24 11:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 756f14c6b29ef6d8fd8a503bb7d72e92 SHA-1: 590e827d6776edb4eb0b019b896e2a523a3c16a7 SHA-256: 484669043624aa0dd578aa2b392a65e17874d10eb3acca8ccfb69c242b328f0b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8212

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dafemum.ru/strik?utm_term=gb+facebook+lite+apk+download+latest+version PDF link annotation
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/45d52ade7d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416500/normal_5fc7f05e2344e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456685/normal_5fcf370038078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_60433bce564d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459916/normal_60366fadbfd98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384831/normal_604f12579eb88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_606c496b1cf3f.pdfIn PDF document text
    • https://pawikewam.weebly.com/uploads/1/3/4/4/134445239/4967747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495399/normal_606298e433e14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_603472f759334.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448538/normal_5fe26b2ad26ff.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/fonibinaraj/xogoviwedologofezo.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/rasukud.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/xozasakizakarowof.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/72090330355.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/44525572817.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/73339910322.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/software_for_pc_website.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_off0000e520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE520 5324 bytes
SHA-256: 1d44c3c3be32ae70215f2dfbcb4c5ff56bb610b755066a18b930f00ee8125d2a

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