Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf60a8644aace258…

MALICIOUS

PDF

44.7 KB Created: 2021-04-25 03:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25cfb1a5b75aeb329a85e7a2b44bd4da SHA-1: 28ee0540d98994f06dfaa4d806bd10c2487a41c0 SHA-256: bf60a8644aace2584a48e74f8e7333ab7c2413601779ee42e3aae9e0553faa53
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document with an action trigger, typical of a phishing lure. It contains numerous embedded URLs, many hosted on seemingly legitimate domains but structured as webform submissions, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 44 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/9979090083.pdf
    • https://ambrose.edu/sites/default/files/webform/20598750849.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/4264017636.pdf
    • https://www.uts.cw/sites/default/files/webform/96040264728.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/65810703597.pdf
    • https://ambrose.edu/sites/default/files/webform/58234525485.pdf
    • https://www.mainephilanthropy.org/sites/default/files/lipedoketuparukol.pdf
    • https://architecturaldesigninc.com/sites/default/files/bujepalifomi.pdf
    • https://www.a1touchsolution.nl/sites/default/files/95216779236.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=pi-star+mmdvm+firmware
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/76225898136.pdf
    • https://community.princeton.edu/system/files/webform/tujuxegagisezemesolut.pdf
    • https://www.vub.be/sites/vub/files/webform/pagilavamuvawasaxega.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/95830943344.pdf
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/ruwitik.pdf
    • https://gradfutures.princeton.edu/system/files/webform/42179508969.pdf
    • https://community.princeton.edu/system/files/webform/kabajizonen.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.