Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01f0b5617040b6d…

MALICIOUS

PDF

37.2 KB Created: 2021-09-27 05:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 51c66f7487d4018ad8a9470d2cd0066b SHA-1: acd8c2a2dccd10320a526488fe331c5990b65916 SHA-256: b01f0b5617040b6d498c745f82c16c6e7c708cce35189a050d8de73f51f53e78
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure with an image-only design and a clickable action. The presence of multiple external URIs, including one that appears to be a redirector, suggests an attempt to direct users to malicious content or further stages of an attack. The document body was heavily truncated and unreadable, preventing a more detailed analysis of its specific content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6667

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 37 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 http://nghieuphong.com/upload/files/49980780290.pdf In PDF document text
    • https://doitoutdoorz.com/file/PkhZUdPxBkHuVPEk.pdfIn PDF document text
    • https://ssekolkata.com/ckfinder/userfiles/files/wutolulez.pdfIn PDF document text
    • https://alhasooncorp.com/Files/files/lusuno.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/83ed96d492ea3c22958520747352ba20/34863080376.pdfIn PDF document text
    • http://bajkolandia-leszno.pl/userfiles/file/lidezanitaxikopobaketo.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/lanemazesimuvovovekegudux.pdfIn PDF document text
    • http://melodylavernebettencourt.com/media/file/gagilinadokij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=download+easy+dpi+changerPDF link annotation

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