Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac919b8be82e7fc…

MALICIOUS

PDF

36.7 KB Created: 2021-05-11 09:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f4fdabf05fde558e6446af133368387 SHA-1: 9c0113ee74f382e424cc906e65f962b6e1ac67a0 SHA-256: bac919b8be82e7fc4860f44d4f54d4f177436e3b6014d5b83710eccf27805864
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free generator / game hack". The document body contains a clear call-to-action to download, further supporting a phishing or scam attempt. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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 https://netcdn.xyz/app/479516143/mcpe-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_off00003671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3671 26996 bytes
SHA-256: e3855faca3a763af6b4da02f6e9777ae6dfd53508e20fd00f77766b391384a57
font_01_sfnt_off00007131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7131 17292 bytes
SHA-256: bad2551fb36a1ff37c0a2928a0b0bdd7baf715808b6c6c89c87aa6c39ddc14cd

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