PDF malware analysis — malicious · 9b51737da937b7a4

MALICIOUS

PDF

41.7 KB Created: 2021-04-25 15:17:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: bab12329fbafc54f25ab9f1f0ef02d29 SHA-1: 321581e934f153b276cb147b5f5df4da9ea875be SHA-256: 9b51737da937b7a4b603b3550c734f3af916efc104bbfc9804b01aae6e527fb2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering game hacks and cheats, indicating a lure for potentially malicious downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a game hack redirect lure supports this assessment. While no scripts were explicitly extracted, the document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely as part of a phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/how-to-download-roblox-hack-tampermonkey-game-hack PDF link annotation
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-pass-requiredfor-pc.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-urbis-level-hack.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-clothes-cheat-2021.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-gameguardian.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-radio-in-jailbreak-deutsch.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-hack-items-on-roblox.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-jailbreak-vip-server.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/cheat-roblox-aimbot-v3rmillion.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-script-kill-player-hack.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/anime-tycoon-hack-roblox.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
`stream_003_off000042e3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x42E3	26388 bytes
SHA-256: `5480a41f7db2658ace6cbbe76bc9b7eb96b8c1ef38bc7462092aa3e29fe949cb`
`font_01_sfnt_off00007e08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E08	19304 bytes
SHA-256: `187e3a804169f9d00e4028c0185fd6ca7aaceb8c5275cca5744bcf1c4873cfbf`

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