Malicious PDF — malware analysis report

Static analysis result for SHA-256 91800a680dc77aaf…

MALICIOUS

PDF

37.6 KB Created: 2021-05-12 18:45:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9bae60397479f3b01371b1e2fe283031 SHA-1: 6fc111ce1b018fc48bf201bc45304700320fa8d9 SHA-256: 91800a680dc77aafa67dd16c6bff1fb50c40a3b8b8bea816bd0e8e2c99b8705d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically a lure for a 'free generator / game hack'. The embedded URL 'https://netcdn.xyz/app/431946152/7-year-old-roblox-game-hack' is identified as malicious infrastructure. The document body also contains text and links related to this lure, reinforcing the social engineering aspect.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/431946152/7-year-old-roblox-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
stream_003_off000032d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D7 27564 bytes
SHA-256: 4683889e00e4cafc687ccc81304b1d515bfedec08d25e2f4e1412c536fe32dcb
font_01_sfnt_off0000711e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711E 18404 bytes
SHA-256: 37225de3c02ebdb31c4d59be1a78a7ea60948fb78f91d5b0c72323347af89c0d