Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbb2f9e65c92d7a…

MALICIOUS

PDF

6.7 KB Created: 2021-06-11 12:39:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d77512ec12a64d161c39b1ee5907ceee SHA-1: b1b938a1ad2ebbee8c873ac7bec67c9bd0f42310 SHA-256: 5dbb2f9e65c92d7a40076b1e33c930d4cb6216ad141542d6c85152c06a1f6bfe
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a website offering 'free Robux' for Roblox, a common lure for phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the heuristics confirm the presence of redirector links designed to lure users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • 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://netcdn.tw/app/431946152/roblox-pastebin-free-robux-game-hack In PDF document text
    • http://www.raneenmed.com/uploaded_files/userfiles/files/_GM479516143.pdfIn PDF document text

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