PDF malware analysis — malicious · 303ce3c96e17bbc5

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 16:36:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 49af3fcf65c426acbc1f8c5ae045e297 SHA-1: 1a37c75298492801d2659a8b8cb99a004ebaf817 SHA-256: 303ce3c96e17bbc51cc0714a9f4f0146e4eac8d8456a161d586b22bbde87e55e

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a link farm, many of which are related to game cheats and hacks, suggesting a lure for users to download malicious content. The presence of a 'download button' heuristic further supports this phishing-like approach. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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-robux-hack-glitch-game-hack
- http://lib.stie-aub.ac.id/repository/roblox-avatar-free_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/free-robux-and-tix-cheat_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/microsoft-free-robux_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/free-links-for-coin-master_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/bl4z3-games-free-robux_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/hack-money-roblox-lumber-tycoon-2_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/play-minecraft-online-free_GM479516143.pdf
- http://lib.stie-aub.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdf
- http://lib.stie-aub.ac.id/repository/itsmerade-best-roblox-free-level-7-executor_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/cheats-fro-csgo-in-roblox_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/crashed-roblox-hacks_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/how-to-change-the-skybox-in-roblox-hack-script_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/roblox-inappropriate-games_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/easy-way-to-get-free-robux-works_GM431946152.pdf
- http://lib.stie-aub.ac.id/repository/free-download-roblox-cheats-hack-tool-v2-3_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003227.bin` `7e347b4f404278b54e74c0deb2375a469ab62f750c3672e4f81c254a8a9a3a9b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3227	22272 bytes
`font_01_sfnt_off000063c9.bin` `a5218e5e2e6a7048e906416cc34b8b87c0149a69b5b21bb58615bfd8d9f94f9c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C9	19188 bytes

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