Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20a5ef218ade9c4…

MALICIOUS

PDF

24.2 KB Created: 2020-04-14 01:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 08852e66eab984539ef398c47d0b69ac SHA-1: 2023fd945fe05cdb6c595d2a5388ca39306b1a16 SHA-256: a20a5ef218ade9c4368b370577e2a43ef0469ab6d967f4827db2ca59d20540a2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to viewing Twitter videos, directing users to multiple external URLs. The heuristic PDF_SEO_LINK_FARM indicates a large number of generated links, suggesting a link farm or SEO poisoning tactic. The ML classifier also flagged this PDF as malicious. The primary intent appears to be driving traffic to potentially malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9526

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://xn--sptjeneste-25a.com/uploads/1/3/0/7/130738753/130738753.html#cara++video+dari+twitter+tanpa+apk
    • http://ewhildick.com/uploads/1/3/0/4/130435745/funufi-gidobesawudaz-wemibiz.pdf
    • http://xlntcoffee.com/uploads/1/3/0/4/130490875/zigov-virepotot.pdf
    • http://dieselgabon.com/uploads/1/3/0/7/130776699/zotevifokivujutexuw.pdf
    • http://klyamrecords.com/uploads/1/3/0/6/130621642/4659440.pdf
    • http://laborandbeyond.com/uploads/1/3/0/7/130738945/4177855.pdf
    • http://cavapoocafe.com/uploads/1/3/0/7/130739396/vebepupiwemap_wiwusutaj_mukisukij.pdf
    • http://bomontgonyboys.com/uploads/1/3/0/6/130639763/savewej_zedemelatakijuw.pdf

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