Malicious PDF — malware analysis report

Static analysis result for SHA-256 293cea63ff1331d8…

MALICIOUS

PDF

59.9 KB Created: 2021-03-03 02:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bde1cf96ab2df89ca629274e29c15ab9 SHA-1: 27ef62d2f1a00c28ef168931e7b7baf7213cf91d SHA-256: 293cea63ff1331d8e7b2a8559e79bd8f151704f93c844ba5061a98cc3f886dd0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external sites, many of which are hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to unit conversion, which is likely a pretext to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6847

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://pelibifir.ru/award?keyword=conversion+pulgadas+a+cms PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366357/normal_603ec37834cfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_603692c5261bf.pdfIn PDF document text
    • http://nudistoff.club/zepurolivifur173bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464532/normal_5fe317b063b4c.pdfIn PDF document text
    • http://rusherx.studio/gate_2016_answer_key_physicslbcp6.pdfIn PDF document text
    • http://prizinsta365.online/how_long_does_it_take_to_receive_a_check_from_republic_bankrudrx.pdfIn PDF document text
    • http://wigomufeze.22web.org/vezusisoxemelavoduwar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460688/normal_60302c6a4d3b6.pdfIn PDF document text
    • http://itagreen.fun/102108475022b5ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_6033c9baeaba6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5fdd82c318e44.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/agenda_2018_online.pdfIn PDF document text
    • http://bijalupukupami.rf.gd/piximikejewub.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/bt_sports_australia_tv_guide.pdfIn PDF document text
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