PDF malware analysis — malicious · 8df332335fc8f81f

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 04:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 84cb54e1ee6e4a7cee9688997bbb345a SHA-1: 89765893d1c1264e630534d4899a3dee6eba5503 SHA-256: 8df332335fc8f81f3fc10982d32c834bde6af9f93bc64045f21085913240959e

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 0.9648

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 https://netcdn.xyz/app/406889139/coin-master-hack-no-verification-2021-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-cp_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-now_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spain_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049ee.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49EE	23692 bytes
SHA-256: `76c4403242370b2d9c0f49c1bacd1c7ecd10d5d90fe1bb0169458e55dbe74c31`
`font_01_sfnt_off00007f7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F7E	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008930.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8930	18252 bytes
SHA-256: `180d563c5e2d4e96f25bdfb7de4de3bd7d6a0696216fbddae55f211609535b0c`

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