PDF malware analysis — malicious · c8d381f405390a57

MALICIOUS

PDF

33.9 KB Created: 2021-07-07 18:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 32ad039a5bebba5413f4649698a4c259 SHA-1: a99639aedc406590e24cfdc5631f004f5394dd4d SHA-256: c8d381f405390a575e1859e08a982a8d4d5f963c33cb112fd1c1956f81b1b9e1

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.tw/app/406889139/coin-master-free-gold-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-download_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/hack-robux-thegatogaming_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/weight-lifting-simulator-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-promo-codes-2021-october_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.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_off00002f78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F78	22564 bytes
SHA-256: `88fac2bd5cf9b19ac42ccc1cbb77af90d517ce3893492e391a740c22d447d8ad`
`font_01_sfnt_off000061cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CD	18244 bytes
SHA-256: `3eec5eb360bf5017ed215d45b36dc0030ce64a4e5d819b76440502fc1e4999a9`

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