PDF malware analysis — malicious · 355e082d033941c9

MALICIOUS

PDF

33.9 KB Created: 2021-07-09 20:21:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7bf915a02a4ba9e55c237998c416ab79 SHA-1: 0a82ace629aaf744b667dc3440df4dda713286ae SHA-256: 355e082d033941c91d5085494cac175771df369ac3b80bca1dcf1f5e5e953373

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks, specifically mentioning Roblox and Coin Master, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded link likely leads to a site that attempts to exploit vulnerabilities or trick the user into downloading further malware.

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/431946152/roblox-free-hair-boy-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/hackear-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-gfames-that-dont-take-password_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earnrobux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-body_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/sex-cheat-codes-roblox-sound-id_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-10-000-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-without-gift-cards_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/what-day-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-really-easy_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_off00003081.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3081	21540 bytes
SHA-256: `bd826069ae560e122903472ddd7500157b6c440792551f1d96bd2206f98da1b4`
`font_01_sfnt_off00005faa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FAA	18952 bytes
SHA-256: `68db533f68a5d85e0c0ba5aa1128411bd5b5e7a97d0d9a36c4d175df7193d229`

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