PDF malware analysis — malicious · eb676565925901dc

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 14:40:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 406f06b17577bf2f51e90974cf46b3e3 SHA-1: 2702696e4ae58ea8db77cfe27f5d8893ad9cbf56 SHA-256: eb676565925901dccb5b917b3467684be8b08bd384a998552d1f3a2c943a4430

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 5

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-hack-linkmon99-roblox-game-hack.
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/how-to-hack-linkmon99-roblox-game-hack PDF link annotation
- https://www.espritroue.fr/ckfinder/userfiles/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-roblox-outfits-2021_GM431946152.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/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-hacking-news_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/cheats-for-rake-classic-edition-roblox_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.espritroue.fr/ckfinder/userfiles/files/www-inject-hack-com-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_off00002f25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F25	22024 bytes
SHA-256: `2f4f4d934bc42cde4897e17646e7b4e0fdc85678efffefd9452196325647b3a5`
`font_01_sfnt_off00005fe2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FE2	19364 bytes
SHA-256: `fb97ff1ed30cd770e3126a44741736566cd44b305205d09e150f620b83d943bf`

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