Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ca6d2e3c9c4588…

MALICIOUS

PDF

31.2 KB Created: 2021-07-21 16:16:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e5d41802fcb3cd8a5f9cf2f5faaebdf SHA-1: 02a33f63a32e0ea597ed4323083fd64a7c5bdfd4 SHA-256: 02ca6d2e3c9c458887cae8f240fb9c54023b0ce29b3c42a0b39074ae6cf5c3e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as generators for popular online games and services. The document body explicitly mentions 'Free Views Tiktok' and 'CLICK HERE TO ACCESS TIKTOK GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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/835599320/free-views-tiktok-game-hack In PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-coin-master-app_GM406889139.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_off000029e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E2 21628 bytes
SHA-256: b8541b1ed689cea42f9c69b54476d7e3a590fea1d6f342d32a92152819b0d421
font_01_sfnt_off00005920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 17752 bytes
SHA-256: ce4f969b492885a6292b68f2810015e61170a5a05df2656d5db0dd0870788c0b

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