PDF malware analysis — malicious · 11992603ae9cdae8

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 04:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 0ef9611d08bde88dcda983834b8d8e2b SHA-1: 53d3a85323cf660ae0444a7efcfed3cd56d87336 SHA-256: 11992603ae9cdae80b1a4393f4831322492acb25dc592c384f2bc22ef8b81ffb

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically targeting 'Coin Master' and 'Roblox' players. It embeds multiple URLs, including a primary redirector at http://netcdn.tw/app/406889139/hackear-juego-coin-master-game-hack, which likely leads to a malicious download or phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and embedded URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/hackear-juego-coin-master-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/best-roblox-hacks-site_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-200-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-com-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-undertale-monster-mania-how-to-get-reset-2-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-phantom-forces-hack-deutsch_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hack-dragon-ball-rage_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-non-model-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-codes-january-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/install-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/atf-6-for-free-model-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-noob-skin-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robloxhacks_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-build-hacks_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_off00002f88.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F88	22464 bytes
SHA-256: `c41848ce74d6d40dc6166f0b7d685237f6cad712648fb258d40ed6ff03b6cb37`
`font_01_sfnt_off0000617f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x617F	18308 bytes
SHA-256: `3544d7e777192f16e01b415bbb4cc4ce382486f30b57fac35e8304f2910641cc`

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