Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e06f8158ca587cc…

MALICIOUS

PDF

61.3 KB Created: 2021-04-21 19:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e17eb321a3e3b38a816d1e6514cc2e6 SHA-1: b2bb00308358224f97ab45c3334bf8ea52e7c30a SHA-256: 0e06f8158ca587cc47044126faa21569eb69a5f1d148c398c7773f763451a1c8
124 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to domains that are not definitively benign, suggesting a link farm designed to obscure the ultimate destination and potentially lead users to phishing or malware sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a pattern of using disposable hosting for link aggregation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6609

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 http://spotlight-sites.com/sites/default/files/webform/wokasonexigugeb.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/tixatikuwasa.pdf
    • https://ambrose.edu/sites/default/files/webform/durigoxilakomisi.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/19026354442.pdf
    • https://www.uts.cw/sites/default/files/webform/tizodakemepegipupimegoxi.pdf
    • http://klm3fg.grhosting.cz/sites/default/files/webform/files/vewamilobofesiwukor.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/doxuwekuwazomiloxeri.pdf
    • https://www.mainephilanthropy.org/sites/default/files/kimakevenowafuxopepasu.pdf
    • http://www.pbttphtk.gov.my/sites/default/files/webform/kafavepovimurajubek.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=introduction+to+group+theory+with+applications+pdf
    • https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/pitoripizebareko.pdf
    • https://www.healthdata.org/sites/default/files/resumes/muvebijamalixodimobowase.pdf
    • https://drones.princeton.edu/system/files/webform/voretazejujuwewoz.pdf
    • https://printandmail.princeton.edu/system/files/webform/83328436210.pdf

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