Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd5f9aaf3a0b72d…

MALICIOUS

PDF

28.6 KB Created: 2021-07-19 07:44:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 859b0477281f421dc51084b256cee2b4 SHA-1: b7df1f9001ee9ba6fd33a100dc91b2e5fac9afa9 SHA-256: 7dd5f9aaf3a0b72d83ee539e9af761f00c4b73e7a45b1f8cba5f7f3617f396d9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically pointing to a lure for a 'free generator / game hack'. The document body reinforces this by displaying text related to free games and a call to action to access a generator. The primary malicious link identified is http://netcdn.tw/app/479516143/free-games-like-minecraft-game-hack, which is the likely destination for the attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0463

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/free-games-like-minecraft-game-hack In PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/minecraft-free-app_GM479516143.pdfIn 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_off00001ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF3 21520 bytes
SHA-256: cd6752fb9665940e98a26d7ac91f3d5effb46dc077574bfe1f3ed6940f7315bd
font_01_sfnt_off00004efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFA 17996 bytes
SHA-256: 6316af01e653c53aa8313e9ee065e63d320a9dd1c98e4ac08eccbec55cd1c79a

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