Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9440b024ff41ce…

MALICIOUS

PDF

38.3 KB Created: 2020-04-18 12:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4420c1a2cf937ee77cee460421c31aae SHA-1: 32f7a8f9f4fe97260152741760e2a5db80ddd49f SHA-256: dd9440b024ff41ce69c8544254e3463bf71b9396cc61c5a14b08d51208e66ad1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body text, though heavily obfuscated, contains references to 'Ielts reading synonyms words pdf' and metadata indicating it was generated by wkhtmltopdf. This suggests a link farm or SEO poisoning tactic designed to attract users searching for study materials, ultimately redirecting them to potentially malicious content. The primary attack pattern involves luring users through deceptive content to a network of linked sites.

Heuristics 3

  • 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 http://der-atemraum.com/uploads/1/3/1/3/131398324/131398324.html#ielts+reading+synonyms+words+pdf
    • http://visionorperish.com/uploads/1/3/0/7/130776088/mugamebu.pdf
    • http://gemsandjewelsoforlando.com/uploads/1/3/0/8/130874134/vabipidos.pdf
    • http://kauaiwellnessmassage.com/uploads/1/3/0/2/130272440/lusowapol.pdf
    • http://amensajero.com/uploads/1/3/0/7/130775142/giganuviresope-mujar-bezuvofop-gabawe.pdf
    • http://ivyensemble.com/uploads/1/3/0/7/130774966/024bad184e9.pdf
    • http://mikeandeli.nyc/uploads/1/3/1/4/131406892/4477537.pdf
    • http://redseaview.de/uploads/1/3/0/7/130739198/wemulikigawu.pdf
    • http://transformingbunburyswaterfront.com/uploads/1/3/0/7/130740298/1593a8d355.pdf
    • http://maxponticelli.com/uploads/1/3/0/3/130323462/gebik.pdf
    • http://hardartclothing.com/uploads/1/3/0/3/130313657/purilimipo.pdf
    • http://betterthanyesterdaypc.com/uploads/1/3/0/9/130969858/857540.pdf
    • http://reesedesigns.net/uploads/1/3/0/5/130543798/9505579.pdf
    • http://lisbethomeandstyle.com/uploads/1/3/0/3/130323229/7071373.pdf
    • http://o-w-l-s.net/uploads/1/3/1/1/131164352/wiwom.pdf
    • http://hopeforeswatini.org/uploads/1/3/0/3/130324044/dibavixikaxizujet.pdf

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