Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efd17c037db11fc…

MALICIOUS

PDF

39.3 KB Created: 2021-05-21 10:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f150a0bbb8ae4e5e75293de736d1e36 SHA-1: 93f2001ade3d35d55e81fda7984653f850213d43 SHA-256: 1efd17c037db11fcbab4188ef5ee50ff5278ca29cd9de2618bf43d7e45ad9536
130 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/431946152/free-girl-hair-roblox-game-hack, is identified as a known malicious redirector. The document body also contains text related to this lure and a call to action, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0143

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/431946152/free-girl-hair-roblox-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E37 26076 bytes
SHA-256: 969c6afbb4b99c9e7f408b0ebcaa520b6dc683cfc012c657fedf97ecb4420921
font_01_sfnt_off00006b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B65 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7877 18296 bytes
SHA-256: 8b4c4b2b466665ac93a944d4fc06515a87c4aea34a1519436c139db9e2468eb4

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