Malicious PDF — malware analysis report

Static analysis result for SHA-256 69401d21cd551f83…

MALICIOUS

PDF

29.7 KB Created: 2021-07-20 00:10:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da30ef6de5eae81416be241bc06c3982 SHA-1: ac40dd7622e2d38e368d623556a13edde6c65911 SHA-256: 69401d21cd551f83e05271f2c2239d22b78de464a68254443d708b2008121447
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, masquerading as a 'free generator' or 'game hack' lure. The document body explicitly promotes 'Free Tiktok Bots' and includes a 'CLICK HERE TO ACCESS TIKTOK GENERATOR' call to action, reinforcing the phishing pretext. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8523

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-tiktok-bots-game-hack In PDF document text
    • http://pastoraldapessoaidosa.org.br/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000216f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x216F 22632 bytes
SHA-256: 2c02b6ced62233aed1bc4b38b1b37871f4a486b3d1fcc8d44a0cf612725a41c4
font_01_sfnt_off0000543f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543F 17672 bytes
SHA-256: 83a0af7587fde9e4cb54786aef6824729efdfe72bd6282daf62b8eaca0103fce

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