PDF malware analysis — malicious · 65b086aa80919bba

MALICIOUS

PDF

31.7 KB Created: 2021-07-19 18:38:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f5f4b7d82461e2abec76dd9f93691b29 SHA-1: a8d81da75925c3b8355fbdc98bb816b75b15e990 SHA-256: 65b086aa80919bba413c3bdcd812214a84f9b54457541b60d4e4c1d2d11e2903

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The document body text and heuristics indicate a lure for popular games like Minecraft and Coin Master, aiming to trick users into clicking these links. The presence of multiple redirector links and a high ML classifier score strongly suggest malicious intent.

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/479516143/minecraft-free-download-pc-game-hack In PDF document text
- https://learnwmf.org/image/data/files/minecraft-font-free_GM479516143.pdfIn PDF document text
- https://learnwmf.org/image/data/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://learnwmf.org/image/data/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://learnwmf.org/image/data/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://learnwmf.org/image/data/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://learnwmf.org/image/data/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- https://learnwmf.org/image/data/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://learnwmf.org/image/data/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://learnwmf.org/image/data/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://learnwmf.org/image/data/files/minecraft-free-ios_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_off00002af4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2AF4	21312 bytes
SHA-256: `7a6d15d1a3bebd7e6b4e3cbb488826f303cf39234e3630b68886e393abd6a59e`
`font_01_sfnt_off0000592f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x592F	18444 bytes
SHA-256: `064b6ae6fa3971595f13ccf6914158de219c664ec1a7cfca763d46b46d8283c4`

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