Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3936e7c2bbf7087…

MALICIOUS

PDF

36.6 KB Created: 2021-05-20 17:16:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5c5897e7461ceaa69e3d9ef8d5c381f SHA-1: 5045f002255db37e9615ebff420ed36c850de942 SHA-256: c3936e7c2bbf70877ab9c7e24ac0fe420a2d41955d46d5e1f5c62411f2fef2d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to what appears to be a malicious redirector infrastructure, disguised as 'free generator' or 'game hack' lures. The document body explicitly mentions 'Free Tiktok Followers No Human Verification' and includes a call to action to access a 'TIKTOK GENERATOR'. This suggests the primary goal is to lure users into clicking the malicious URL, likely to download a second-stage payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-no-human-verification-game-hack In PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-games-like-minecraft_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
stream_002_off00003172.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3172 26488 bytes
SHA-256: 58a82b011ba31c0f51d1efbebae5d91bf9c2d7a13e4d9b5fff813dfad47985c8
font_01_sfnt_off00006d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 18456 bytes
SHA-256: 6fa1441c1a321216f6114c799401e851ec7285796cff0c56691a74954fdf2722

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