PDF malware analysis — malicious · 7c5e6914a260803c

MALICIOUS

PDF

51.7 KB Created: 2021-06-03 12:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: a271f403743476c817cd778a0de3d318 SHA-1: aaa10d8e8a5da40b2c2a37295a3cc9832a3305d9 SHA-256: 7c5e6914a260803c29bc7a24a00d25172aa23bf613e61c8f444cf925b64c7b9c

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 document body that advertises free in-game items and hacks, strongly suggesting a lure for users to download further malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are also suspicious. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification.

Machine Learning

Nyx PDF Classifier malicious score 0.9657

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.online/app/431946152/unlimited-robux-game-hack
- https://ifef.es/ckfinder/userfiles/files/free-links-for-coin-master_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-game-hunters-club_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/minecraft-xbox-one-code-free_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/toolbox-for-minecraft-ios_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/online-hacking-tricks-coin-master_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/roblox-piano-hack_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-ios-app_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/tiktok-free-zone_GM835599320.pdf
- https://ifef.es/ckfinder/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/how-to-hack-pubg-mobile-uc-without-human-verification_GM1330123889.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-robux-no-verification-2021_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-card-collection-link_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/free-coins-coin-master-ios_GM406889139.pdf
- https://ifef.es/ckfinder/userfiles/files/robuxhub-net_GM431946152.pdf
- https://ifef.es/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005084.bin` `c975443306e36fdf50982beea0fa6d2661519fdeb2dbc8da0ccf3c4821267440`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5084	26388 bytes
`font_01_sfnt_off00008dc6.bin` `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DC6	3400 bytes
`font_02_sfnt_off000098ea.bin` `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98EA	5696 bytes
`font_03_sfnt_off0000a5fc.bin` `e6f43664123b30e8a11c386baeda00565b0269c6558a5a6efce4e8dd844d6876`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA5FC	18768 bytes

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