Malicious PDF — malware analysis report

Static analysis result for SHA-256 9164ad2e80663168…

MALICIOUS

PDF

57.4 KB Created: 2021-04-08 18:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab79d7137f1259b4551f786144fd91a1 SHA-1: 53b68874606476e2601eabe92bb2cba3c372f5ac SHA-256: 9164ad2e806631681b6683d8ec69b207edafe31ea5839d149a1668bc7acfb01e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable domains or are part of a link farm, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a malicious document designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6847

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/58588935603.pdf
    • http://www.guninetwork.org/system/files/webform/heirri_proposals/dagen.pdf
    • https://www.dgs-interparts.be/sites/default/files/55949953827.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/taxebuvokorutupimapo.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/powevalixerofewum.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/wibojamivumararevede.pdf
    • https://www.mainephilanthropy.org/sites/default/files/wimatetomowitiki.pdf
    • http://klm3fg.grhosting.cz/sites/default/files/webform/files/wajuso.pdf
    • https://www.a1touchsolution.nl/sites/default/files/larigujumikanezazezogiwi.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/52872338461.pdf
    • https://www.blplegal.com/sites/default/files/webform/89971565628.pdf
    • https://www.jts.org.jo/sites/default/files/webform/1653940235.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=advantages+and+disadvantages+of+artificial+intelligence+pdf
    • https://community.princeton.edu/system/files/webform/26098210740.pdf
    • https://printandmail.princeton.edu/system/files/webform/31356988355.pdf
    • https://thesanfordschool.asu.edu/sites/default/files/webform/43157208480.pdf

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