PDF malware analysis — malicious · f9d22b0dfe89a125

MALICIOUS

PDF

33.4 KB Created: 2021-07-19 09:20:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 25f236a48f85c72ab65afb6ea1c80641 SHA-1: 4d65b7a826a58ec06291f75d4f22721a65222ad3 SHA-256: f9d22b0dfe89a1258a52049669f86e6faca46648f7995e34f0f677e9fd573a9c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, masquerading as 'free generators' or 'game hacks' for popular online games and services. The primary lure directs users to 'http://netcdn.tw/app/835599320/free-tiktok-accounts-with-followers-game-hack', which is associated with known malicious infrastructure. The document body also contains a call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR', further reinforcing the deceptive nature of the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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-accounts-with-followers-game-hack In PDF document text
- http://apeh.ro/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- http://apeh.ro/images/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
- http://apeh.ro/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
- http://apeh.ro/images/free-minecraft-account_GM479516143.pdfIn PDF document text
- http://apeh.ro/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://apeh.ro/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- http://apeh.ro/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
- http://apeh.ro/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
- http://apeh.ro/images/free-robux-script_GM431946152.pdfIn PDF document text
- http://apeh.ro/images/minecraft-education-edition-free_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.

Filename	Kind	Source	Size
`font_00_sfnt_off00003013.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3013	22140 bytes
SHA-256: `3c16ba68edd0f1da0ae0ad5f4e2e22f46380847d5cf14b39ab2286c4345a2072`
`font_01_sfnt_off000060c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60C4	18200 bytes
SHA-256: `00ff3188f7c2cc6f3bb1e48311a72fd536e799d3f1f3caf1b59355958851fd7e`

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