PDF malware analysis — malicious · 1613b8dc46aff032

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 02:10:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 58ef553b507fbaaf21d1a538e995d666 SHA-1: 481a09cfdda2379f9e92cebfe49a575cd3e7ba41 SHA-256: 1613b8dc46aff03296ccc0fdfb52287fc898fc2351d5cc4575ed5c50e82ab3d4

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing to a lure for game-related cheats. The primary IOC is the redirector URL, which is likely the entry point to a malicious download or phishing site.

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/479516143/minecraft-bedrock-edition-free-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/tiktok-free-like-and-views_GM835599320.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-secret-cheat-codes-for-music-steven-universe_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/sex-in-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hoq-to-buy-anything-from-catalog-for-free-roblox_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-jailbreak-how-to-get-free-radio-deutsch_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-best-games-to-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-how-to-get-robux-with-cheat-engine-63_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/noclip-hacks-roblox_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/mobile-hack-roblox_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.

Filename	Kind	Source	Size
`font_00_sfnt_off000031c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C4	22440 bytes
SHA-256: `41d1d63bc19d8cbdb1a528e0369bfe2df8a1851a8ec8c2302ff97ce0374c6cb0`
`font_01_sfnt_off00006391.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6391	18560 bytes
SHA-256: `6eb51e46e0363b168e6478380e78b8c00c8242cdd3a4172c37b512f266796614`

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