PDF malware analysis — malicious · 744e358e79e55fc3

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 21:00:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f8915d4e40c2d180bb619a64d933b2d1 SHA-1: eec85d13a156e0d10b43f11ab46399c694a2e0d3 SHA-256: 744e358e79e55fc370f91ab02653a12c781ca4cb2eca284de4d0e9053a0f33ba

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 0.9980

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/free-download-coin-master-game-hack PDF link annotation
- https://diendientuvn.com/public/upload/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/item20212021-free-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-free-robux-no-hack-on-phone_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-hack-jump-infinite_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-three-robux-hack_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-online_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/nope-hack-roblox-cheat-engine-64_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-code-no-verification_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-hack-in-roblox-with-bad-words_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/cart-ride-for-free-admin-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-hacks-in-booga-booga-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-accessories-in-roblox_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
`stream_002_off00003293.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3293	23312 bytes
SHA-256: `18ad650d156f57ccabce57d445e951b9f9feca6bf0823865552a7f1cef68dabb`
`font_01_sfnt_off00006725.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6725	18576 bytes
SHA-256: `ba0db7d20da48e941f50dfa15a3fc29fea34058df87ad3f7e9723dbec04454cd`

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