PDF malware analysis — malicious · 875113baf59945f6

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 08:48:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: c65cc3c132ffa91ff13ea057f0fc797a SHA-1: d98fdb95dbe4275e7e1f418f9fc6665319ccb7ef SHA-256: 875113baf59945f669dd37538036e6c8bf0cc19ce6a90b5aaf22206e65d60a63

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/nonsense-diamond-cheat-roblox-game-hack PDF link annotation
- https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-hack-generator-club-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/roblox-elemental-wars-free-rolls_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/login-roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-make-a-badge-for-free-on-roblox_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/roblox-free-lua-executor_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-builders-club_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-become-a-hacker-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/rbx-claim_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-mod-apk_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-rblx-market_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/hacking-apps-for-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_off0000314d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x314D	22116 bytes
SHA-256: `1185e519ce5e09d525fe9b5f45ed0b9a28865cfa29738043530fc289e7d5cf35`
`font_01_sfnt_off00006240.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6240	19476 bytes
SHA-256: `347f7c04cb1593cfac15807556e787ba6fe279fce47d9710cca9011d8003bc0b`

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