PDF malware analysis — malicious · 3e4d80bdd99ec079

MALICIOUS

PDF

49.6 KB Created: 2021-05-13 12:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: cb02602fc28a19770418e88fc146ecea SHA-1: 898cf92b4e7fb817c66184e8a46e20038f02899f SHA-256: 3e4d80bdd99ec079d02e04a41eadab490d31037fea78e0c8701762cf12125731

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 0.8642

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/how-to-hack-coin-master-android-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/get-minecraft-windows-10-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/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-bundles_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-ultra-attack-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pro-gamers_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/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/ultimate-free-spins-coin-master_GM406889139.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-gen_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/how-do-you-get-free-robux-without-paying_GM431946152.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
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004952.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4952	26080 bytes
SHA-256: `c2c00a33b55b0e0502b801b2398434b9ff3847a664cceb457596122192776a87`
`font_01_sfnt_off000083c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83C4	2896 bytes
SHA-256: `c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd`
`font_02_sfnt_off00008da5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DA5	7332 bytes
SHA-256: `d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d`
`font_03_sfnt_off00009fbd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FBD	18056 bytes
SHA-256: `bcfa17c5709dab1c3cba96da80ba62d2e7141defff98e25088c987d76bf65ce0`

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