PDF malware analysis — malicious · 3509892bcbb976cb

MALICIOUS

PDF

33.5 KB Created: 2021-07-21 11:34:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 279fca551d0f89ed4cf73b329bcc11dc SHA-1: 45ecaaf02c35fae115a3ac21cf49be4a1ca40d12 SHA-256: 3509892bcbb976cb7d79d35cf41984b28a3d66ced8b32a8ccf1cff0abd6be6a2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as "free generators" or "game hacks" to lure victims. The document body and embedded links strongly suggest a phishing or scam attempt, likely to deliver further malware or collect user credentials. The presence of embedded URLs and the lure of free items are indicative of a social engineering tactic.

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/406889139/free-spins-and-coins-on-coin-master-game-hack In PDF document text
- http://olesya-chagovets.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
- http://olesya-chagovets.com/images/minecraft-free-online_GM479516143.pdfIn PDF document text
- http://olesya-chagovets.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- http://olesya-chagovets.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- http://olesya-chagovets.com/images/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
- http://olesya-chagovets.com/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
- http://olesya-chagovets.com/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- http://olesya-chagovets.com/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://olesya-chagovets.com/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
- http://olesya-chagovets.com/images/how-to-get-verified-on-tiktok-for-free_GM835599320.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
`stream_002_off00002d68.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2D68	23196 bytes
SHA-256: `beb18c8f8f2a252af8a762c6fbecef9f53224bdfedcdb9f749b9f4fcce7594c0`
`font_01_sfnt_off000061c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61C7	18060 bytes
SHA-256: `64690fddacb88a1b87eb78a3bf181b542b813998c8d2539429c7660090ba79fa`

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