PDF malware analysis — malicious · aa43ffe5c8fc13cf

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 01:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: a9630b5e766754584c2167a64ec0be84 SHA-1: aa45defef5a5e28587aa3758d65c8eac60192169 SHA-256: aa43ffe5c8fc13cf18bc4d01e05b873c6212a46154599f970c72c01e06082f16

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure to entice users to click on a malicious URL. The embedded link, http://netcdn.co/app/431946152/roblox-gas-station-simulator-cheat-game-hack, redirects to a site likely designed to download a secondary malicious payload. The ML classifier strongly indicated maliciousness, and the PDF structure and content align with common social engineering tactics.

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.co/app/431946152/roblox-gas-station-simulator-cheat-game-hack PDF link annotation
- https://diendientuvn.com/public/upload/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-t-shirt-template-free-shipping_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/cheat-engine-wallhack-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/microsoft-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/block-best-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-alien-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-ip-address-hack_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/avatar-the-last-air-bender-roblox-hacks_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-codes-generator-no-verification_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_off0000314c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x314C	22056 bytes
SHA-256: `331ade804093116afc5c373dea34912c4add492be0613fa150e762a30a18c8de`
`font_01_sfnt_off0000622d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x622D	19276 bytes
SHA-256: `58bb6e1ff726a2698a09e77b8a749fd491a4af435d669d0df9e2715e3b7030a5`

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