PDF malware analysis — malicious · 7aa8fb31d80b091f

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 07:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: fb9c78fb9f57a168cf42a4d5a6a59a58 SHA-1: 9873c1668d558543d4a80997f88c8f8f710ae5f1 SHA-256: 7aa8fb31d80b091f16e90ba068ece550f98cbc30b6f90f2d666c79a048e3205d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and cheats, specifically mentioning 'Coin Master Cheats 2021'. It includes multiple embedded URLs pointing to sites offering similar content, with a primary redirector at http://netcdn.tw/app/406889139/coin-master-cheats-2021-game-hack. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for phishing or malware distribution.

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-cheats-2021-game-hack PDF link annotation
- https://trustindoutama.com/assets/CKImages/files/free-robux-generator-no-human-verification-mobile_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/hacking-denis-daily-roblox_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/hack-de-roblox-admin-descargar_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/roblox-clubs-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-robux-2021-yt_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/robux-gratis_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/game-give-free-robux_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-cheat-speed-in-roblox_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/hack-peoples-accounts-on-roblox-rc7-script_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-roblox-accounts-2021-february_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_off00002ff8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF8	22648 bytes
SHA-256: `2373bb414c9f4f1c0fa6341ca575a6c04dc6134f448cf01ed5959933f440d86a`
`font_01_sfnt_off00006260.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6260	18404 bytes
SHA-256: `b84a6eff53f49c27ef2dd0e07956638ce86fcdd1a1510f2c693010b455af6b5b`

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