Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a75efe487ce9133…

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 19:11:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f118c1f4a615c4fc6aee8e6b3550ddb SHA-1: a04e5c9bb53ca07f4cd6ae861eeadeaa47c23a77 SHA-256: 9a75efe487ce9133592b9d789f4b71a4dd0b83027d4178c8c899b7573711449e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generators' or 'game hacks' for popular platforms like TikTok and Roblox. The document body includes a prominent call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR', further reinforcing the lure. The primary malicious URL identified is http://netcdn.tw/app/835599320/free-tiktok-comments-game-hack, which is likely used to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-comments-game-hack In PDF document text
    • https://i-koinoxrista.gr/images/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://i-koinoxrista.gr/images/coin-master-free-spin-and-coin_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_off00002e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E72 21952 bytes
SHA-256: 055f89e5f4a2931b94754b0c27e07225653f1df2b34d226e26c18438e531cea5
font_01_sfnt_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 17716 bytes
SHA-256: be925199a27c2d273bbfb828ef38ce2fcf452edcc9d534dc6164d07d4183a457