Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e80d382a08007ec…

MALICIOUS

PDF

54.8 KB Created: 2021-04-10 00:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0513fcee4b8a1bf6c78846f118877259 SHA-1: ad91e4d6ed22dc48ebe0189b3040c4eda9b9d928 SHA-256: 2e80d382a08007ec29063d3f8a78a8108fd235128b170cbdacdb658f65933b93
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, many of which point to disposable domains or are structured as link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6699

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://ambrose.edu/sites/default/files/webform/54125375098.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/17184396690.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/povufukawonafano.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/604022749.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/22435641867.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/dakorudi.pdf
    • https://web.liderpapel.com/sites/default/files/webform/dojoxopanikofogenag.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/welukugipevodabarovefeweb.pdf
    • http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/12812059159.pdf
    • http://portal-mysigma.com/system/files/student-proof/woximinel.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=alberto+rivera+comics+free+pdf
    • https://lib.asu.edu/system/files/webform/61431168480.pdf
    • https://printandmail.princeton.edu/system/files/webform/31356988355.pdf
    • https://printandmail.princeton.edu/system/files/webform/zupedofijemurak.pdf

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