PDF malware analysis — malicious · 6c2838f1d62f81e3

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 18:10:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: c2555348ca72b04b8b7249f1fd523638 SHA-1: 145d5d32579ea9b6cbf92a3d54d80ac293c35ca1 SHA-256: 6c2838f1d62f81e3c86e729c5fd32d07d2198d0d52a899209c8fe13c4f5ec459

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/name-that-youtuber-roblox-cheats-game-hack PDF link annotation
- https://www.espritroue.fr/ckfinder/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/cheat-pour-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/hacks-de-roblox-robux-2021_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/hack-de-robux-para-todos-pastebincom_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/get-free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/seven-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-get-roebucks-in-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_off00002fef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FEF	22668 bytes
SHA-256: `7a7a767ebd648a931803645458ed46db15adb6758bb332311c2057bfa8d28389`
`font_01_sfnt_off0000626e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x626E	19320 bytes
SHA-256: `c5732da27b3d9e1712fcefb44883c7c8707858148022e6776d3d4cba34d8fecc`

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