PDF malware analysis — malicious · 877d1934b589d6ae

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 08:23:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 03f85de88f911ce5bd907bf85ab3a1e7 SHA-1: ed07cd9b0d6c183a01b664adc720911772935e60 SHA-256: 877d1934b589d6ae1f9df76691b89ea8c8fee3424fd7fcf9ed1b882a0041448a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and generators, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to potentially malicious content or downloads. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a social engineering attack.

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/comment-avoir-un-cheat-sur-roblox-franais-gratuit-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/roblox-generator_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-dashing-simulator-hacks_GM431946152.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/roblox-how-to-get-free-ranks_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/is-there-an-actual-real-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-look-like-dio-for-free-in-roblox_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hack-robux-thegatogaming_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/tiktok-free-view-quest_GM835599320.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/op-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-cloth-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/minecraft-free_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hack-and-slash-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_off00003382.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3382	22556 bytes
SHA-256: `f5019a1fabc254eae1db5aff784e46025701c93db98c192b6e230244a2ea447d`
`font_01_sfnt_off000065b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B8	19556 bytes
SHA-256: `ec32de28df1057a6e7bfef12e2a217394fa0c7788109e9038258eb016c50b09b`

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