Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f35e9102375e2f…

MALICIOUS

PDF

36.7 KB Created: 2021-03-28 02:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb2899176a0fba8b39e654cd00833a1a SHA-1: 0240330a3d650980827fe2c1ce41cc574afc98fd SHA-256: 00f35e9102375e2f25829228dbbdff851276d9338328f4e7ba9cbf66966e5bf5
172 Risk Score

Malware Insights

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

This PDF was identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The PDF appears to be an image-based lure, typical of phishing attempts, designed to trick the user into clicking the embedded link. The link leads to a URL that likely serves as a gateway to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7426

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 36 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://yafferge.ru/award?keyword=windows+server+administrator+interview+questions+and+answers+pdf
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_4612284f11df49fd8bd1353aaa3a9c12.pdf?index=true
    • https://5e73d190-47a4-4ead-99bf-7e9069f06a16.filesusr.com/ugd/55cc32_dc98ab6ba3154e5499c1883bc2146916.pdf?index=true