Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf259fa3999e63d3…

MALICIOUS

PDF

51.7 KB Created: 2021-04-21 10:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3f0131867dbda20a9d85c3c407aa988 SHA-1: 2615704846a0b2d4c621afa297cdee7e123a0fb9 SHA-256: bf259fa3999e63d306f05e643410563ef844fd26d582b76147cb67fc1b7474b9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The presence of these indicators suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6781

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://www.jts.org.jo/sites/default/files/webform/1653940235.pdf
    • http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/fipeforivu.pdf
    • https://www.mothercare.ro/sites/default/files/webform/resumes/49428740932.pdf
    • http://www.guninetwork.org/system/files/webform/heirri_proposals/gafazibo.pdf
    • https://www.woonsocketri.org/system/temporary/webform/bogobovimefegaf.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/40041164747.pdf
    • https://vectorcorp.net/sites/default/files/webform/resume/92207600326.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/palepipob.pdf
    • https://www.termis.org/system/files/webform/98565071062.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/7486912807.pdf
    • https://www.jts.org.jo/sites/default/files/webform/nisegat.pdf
    • https://ambrose.edu/sites/default/files/webform/42416127327.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=south+bend+how+to+run+a+lathe+book
    • https://printandmail.princeton.edu/system/files/webform/54002061309.pdf
    • https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/37488496184.pdf

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