Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9084e1d71961f3…

MALICIOUS

PDF

29.1 KB Created: 2021-07-26 12:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc9bbf0db1a6db36192b5f7ecf329f44 SHA-1: de4563e8cebbd032321b6d5605c6d55f0a31d484 SHA-256: 8f9084e1d71961f3b792fafab3d46f54c6a932c0d42a7619a911b6c4c30ddf67
130 Risk Score

Malware Insights

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

The PDF contains a lure for a 'free generator / game hack' which links to a known malicious redirector. The document body also contains text and a button lure encouraging the user to click the link. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0570

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.tw/app/479516143/minecraft-for-ipad-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00001f39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F39 22476 bytes
SHA-256: 305bf8e9b5b3e577bf4a446be37b757a92aa6d85b4264e272e7e9aedfdb8a8e0
font_01_sfnt_off000050ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50EF 18060 bytes
SHA-256: e7041c736bb680ef9c5afd20c9d1b3857fb6e2c22e525da80690d2251a0ac91e

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