Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9aad35058ff20e0…

MALICIOUS

PDF

38.4 KB Created: 2021-05-22 09:14:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 44508ac4a2d52a3af513a1844d4d63b6 SHA-1: 283cfcc07a2e59add798aa9d2274a4ccb66304d2 SHA-256: c9aad35058ff20e0bcf786ce41fcb4eadff7a50ab6f857ce795a57dac846c322
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering 'free generators' for popular games and services, which are flagged as malicious redirectors. The document body also contains a prominent call-to-action to access a 'TIKTOK GENERATOR'. While no scripts were explicitly extracted, the presence of malicious links and the lure of free in-game currency or services strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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/835599320/free-tiktok-followers-generator-game-hack In PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/win-free-robux_GM431946152.pdfIn 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_off0000326f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326F 24656 bytes
SHA-256: 413e6b4bd5e3cbb7a995ceed7e4c8a2202649890fc8937a53939aa3735a15049
font_01_sfnt_off00006b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6B 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off0000755c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755C 17924 bytes
SHA-256: 15e81544c7296339f60406a70d440ba472803439c3c01f92585f07e7e66dad8a

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