PDF malware analysis — malicious · c7404f8e2f90f428

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 01:46:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9eb9059b308dc2b8a0cad76128d7fac1 SHA-1: d5269e27b41bfe1b43a5f46b31ea627056fd50d4 SHA-256: c7404f8e2f90f428117ac8db4da61dd28ac4047be115729fc3f8df7a0eeca1f6

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are SEO-optimized and point to sites offering game cheats and in-game currency. The ML classifier and the PDF_SEO_LINK_FARM heuristic strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. No scripts were extracted, but the document body and heuristics suggest a lure for potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/hack-pour-level-dragon-ball-super-2-roblox-game-hack
- http://www.eptaviation.com/images/coin-master-cheats-free-spins_GM406889139.pdf
- http://www.eptaviation.com/images/robux-gratis_GM431946152.pdf
- http://www.eptaviation.com/images/coin-master-twitter-free-spins_GM406889139.pdf
- http://www.eptaviation.com/images/get-free-robux-without-human-verification_GM431946152.pdf
- http://www.eptaviation.com/images/free-roblox-codes-2021_GM431946152.pdf
- http://www.eptaviation.com/images/free-texture-packs-for-minecraft-pe_GM479516143.pdf
- http://www.eptaviation.com/images/coin-master-email-rewards-link_GM406889139.pdf
- http://www.eptaviation.com/images/how-to-get-a-hacked-roblox-account-back_GM431946152.pdf
- http://www.eptaviation.com/images/free-roblox-accounts-with-robux_GM431946152.pdf
- http://www.eptaviation.com/images/roblox-free-noob-accounts_GM431946152.pdf
- http://www.eptaviation.com/images/how-to-get-hacks-on-roblox_GM431946152.pdf
- http://www.eptaviation.com/images/how-to-get-roblox-credit-for-free_GM431946152.pdf
- http://www.eptaviation.com/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
- http://www.eptaviation.com/images/apps-for-free-robux_GM431946152.pdf
- http://www.eptaviation.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdf
- http://www.eptaviation.com/images/fan-page-coin-master_GM406889139.pdf
- http://www.eptaviation.com/images/coin-master-apk-hack-358_GM406889139.pdf
- http://www.eptaviation.com/images/free-spin-link-for-coin-master_GM406889139.pdf
- http://www.eptaviation.com/images/pokemon-go-free-3d-model_GM1094591345.pdf
- http://www.eptaviation.com/images/hack-coin-master-xyz_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005038.bin` `bbb6646146943ce9d14b2fe279e123549b8b127f961f31200d20b9318ec09fdb`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5038	27416 bytes
`font_01_sfnt_off00008cf1.bin` `30539c17da6bf7b721e175e77f565eeecc84fdce873f3eef88cccf3a33ea38c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CF1	19344 bytes

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