PDF malware analysis — malicious · 152f40fd15da1756

MALICIOUS

PDF

35.0 KB Created: 2021-07-02 09:27:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: c6e6d65b6b39bee3efdd1a58166a4b73 SHA-1: 55f7eff2516385988eacefb3625bcf0ec97fbf8d SHA-256: 152f40fd15da1756e75375ef2069a80edac060821ac692ee0b9afe47c0c9810c

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.co/app/406889139/coin-master-hack-reddit-game-hack PDF link annotation
- https://xhse.vn/public/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
- https://xhse.vn/public/upload/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-game-cards-free-pin_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/prooving-that-how-to-get-free-cloths-e-free-roblox_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/how-to-hack-free-robux-2021-no-download_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
- https://xhse.vn/public/upload/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- https://xhse.vn/public/upload/files/free-robux-apk_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/what-is-a-robux_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/can-i-hack-uc-in-pubg_GM1330123889.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-cheats-android-robux_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-free-dowlod_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-jailbreak-hacks-for-money_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-codes-for-shirts-free-shipping_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-free-white-hair_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/roblox-retail-tycoon-money-tree-cheat_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/hacks-roblox-phantom-forces_GM431946152.pdfIn PDF document text
- https://xhse.vn/public/upload/files/free-robux-code-generator-no-human-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
`stream_002_off0000309f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x309F	23636 bytes
SHA-256: `397d4363e46fc3336132009817b6ac38e2983f4a9a870ab10013217d97064830`
`font_01_sfnt_off00006634.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6634	18180 bytes
SHA-256: `1081114b10febab216a61b4f0b1df1cdc7084fd57e5266ca6a1d4599479f230d`

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