PDF malware analysis — malicious · f0876f1d226b1786

MALICIOUS

PDF

34.9 KB Created: 2021-06-24 03:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 31c4f1a7efae09e8082cdc6769ca384d SHA-1: 422c03596f5662e22f8ac70190c032a7f5ad46ff SHA-256: f0876f1d226b17863021dbd89567baf76f6ccbf0e02bc2af47cae1a22f60b06f

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/431946152/just-go-mobihack-net-roblox-hack-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-robux-cheat-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-peoples-accounts_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-khol-admin-house_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-exploit_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/this-you-cna-do-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-install-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/proprofs-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/2021-roblox-hack_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_off00002fc6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FC6	22512 bytes
SHA-256: `34fb18139fa086f3d279b7c0861a43a06e6d21bf8869bcaa74131feaa09e9e46`
`font_01_sfnt_off000061ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61FF	19548 bytes
SHA-256: `bcedfdcb7d4284e4df4e64bb0a01f1cdd4f73ecf3ad82dd655e049e8e45b70af`

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