Malicious PDF — malware analysis report

Static analysis result for SHA-256 603080193a5cf3b0…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 06:45:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6884275215dc22166ba2cb5094ac305 SHA-1: 9b3c84b7f7f19f541c0c7d2d0ecc6d4b3953108f SHA-256: 603080193a5cf3b034f7d8de1fe385385e933c4b98f93a8d05b3df69b181b808
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular platforms like TikTok and Roblox. The document body explicitly mentions 'Free Views On Tiktok' and includes a call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR'. The embedded URLs are designed to lure users into clicking, likely leading to further malware downloads or phishing attempts.

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-views-on-tiktok-game-hack In PDF document text
    • http://ascom4.com/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://ascom4.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://ascom4.com/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://ascom4.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://ascom4.com/images/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://ascom4.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://ascom4.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://ascom4.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://ascom4.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://ascom4.com/images/free-robux-websites-no-human-verification_GM431946152.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_off00002bed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BED 23440 bytes
SHA-256: 1b206a68d11c7a0ffe5161d93484a5adf24cc80b3894f09840bc814852a1b53a
font_01_sfnt_off00006100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 17752 bytes
SHA-256: 0bba4198fd0ca9d20010dde6368f831223727c1fd110b32f8bd9ae0070f69573

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