Malicious PDF — malware analysis report

Static analysis result for SHA-256 0349ebd16b9cd7aa…

MALICIOUS

PDF

28.7 KB Created: 2021-06-29 03:51:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 85661d75f37a8c55d30d116cebab09f7 SHA-1: a5956d81049ef1bf6a18121a8396539d935e51b1 SHA-256: 0349ebd16b9cd7aa66f07250854d3a092bde4729d8a8ad4ad3a0d814e446b551
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector URL that masquerades as a free generator or game hack, designed to trick users into downloading a file. The document body text also contains phrases like 'CLICK HERE TO ACCESS ROBUX GENERATOR', reinforcing the lure. No scripts were extracted, but the embedded URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0330

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.co/app/431946152/synapse-roblox-free-download-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000187a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x187A 22064 bytes
SHA-256: ce67bce7b8ae2b268aad82f1152240ae3817bf7f825881ae1189fb7a10e65d65
font_01_sfnt_off0000497e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497E 19916 bytes
SHA-256: bd3bf0c1b174295c393b4c8b45b620546f0550faef6ffcebf0243802d03a9434

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