PDF malware analysis — malicious · 4c41e4a07eb5cbdf

MALICIOUS

PDF

35.7 KB Created: 2021-06-26 12:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: bc0120c14cc37e4e89c580c13abb0329 SHA-1: da039c493f6e9adba21fe578e7143cfbb539cc7c SHA-256: 4c41e4a07eb5cbdf61aeaa21dbc823a2754d6e91aeee30fd209c72b07f2a9b99

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a high-confidence heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.co/app/431946152/roblox-sex-script-cheat-engine-game-hack. The document body also contains this URL and related keywords, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves tricking users into visiting a malicious site under the guise of obtaining game cheats.

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/roblox-sex-script-cheat-engine-game-hack PDF link annotation
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-code-on-how-to-get-clothes-for-free_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-generator_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-project-pokemon-duplication-hack_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-roblox-script-executor-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-shirt-creator-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/cheat-roblox-jailbreak-speed-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-lumber-tycoon-2-money-hack-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/transparent-pants-roblox-free_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_off000033d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33D8	22796 bytes
SHA-256: `198870eb071ce56802e1982766df473ed1c3ba15ae562e170109c45c6b4e6db0`
`font_01_sfnt_off00006680.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6680	19052 bytes
SHA-256: `9182bba062581e023aa289189e44a71daacbce7bb385164c26a938e167c0e610`

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