Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b61d993acfabee8…

MALICIOUS

PDF

41.8 KB Created: 2021-05-10 17:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: f1fcc21d4f83358a6a3f0b5833b8e14a SHA-1: 954c3bb39bd6d6af871f26dcc5a9df824c172691 SHA-256: 2b61d993acfabee87e39ab5171b0941603031469645d26edd2834bcce0073d0b
130 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/minecraft-java-edition-code-free-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_003_off00003590.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3590 29520 bytes
SHA-256: bbc4aefbb7140f0378ad3c233e61e881756663091fade50d7e8ccc2cbc8136de
font_01_sfnt_off000078c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C8 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8269 18164 bytes
SHA-256: f60a0ad92d00317e2c15f806bb6b4e732b7ddb4bf4afc6afb4b51f1f749874bc

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