PDF malware analysis — malicious · dcd8af10e20d6d6a

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 06:58:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 939feec2be8342672c24d524f36681c6 SHA-1: 7041094e088bfe4f6d0d7837b07c3d322e0e2f74 SHA-256: dcd8af10e20d6d6a2ae125c6fc26637984811d3cd358fe8a35fc95f8702064dd

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/jailbreak-roblox-hack-speed-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-install-hacks-for-roblox_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/buzz-roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/robux-xyz_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-hack-roblox-games_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-steves-one-piece-hack-tp-chest_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-stuff-on-roblox-high-school_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.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_off00003120.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3120	22980 bytes
SHA-256: `294c973df84729992549c36ff621ec4bfe0bb20758e060b866f21554488fe2fa`
`font_01_sfnt_off000064e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64E8	19292 bytes
SHA-256: `0af01a829e52da9e8d99127fbfda8dd907209eff2c16dddf59c5b80700240496`

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