PDF malware analysis — malicious · c763efc796339ff8

MALICIOUS

PDF

44.8 KB Created: 2021-05-20 04:40:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 810990d2fc28a780f7fff4eb42740435 SHA-1: e2f79734953e4520db4b0d4004f3d405588e1942 SHA-256: c763efc796339ff89e665aeea8d0b1137a9c7ea8bad402cfceeaac8fb3b478ff

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages related to game cheats and hacks. The ML classifier also flagged this PDF as malicious. The presence of numerous links suggests a link farm or a phishing attempt to direct users to potentially malicious sites for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/spin-links-for-coin-master-game-hack
- http://centuriatus.com/images/free-coin-master-hacks-no-verification_GM406889139.pdf
- http://centuriatus.com/images/how-can-i-play-minecraft-for-free_GM479516143.pdf
- http://centuriatus.com/images/get-free-roblox_GM431946152.pdf
- http://centuriatus.com/images/how-to-downgrade-minecraft-pe_GM479516143.pdf
- http://centuriatus.com/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
- http://centuriatus.com/images/free-robux-obby_GM431946152.pdf
- http://centuriatus.com/images/coin-master-card-collection-link_GM406889139.pdf
- http://centuriatus.com/images/you-promised-my-son-free-robux_GM431946152.pdf
- http://centuriatus.com/images/coin-master-time-hack-ios_GM406889139.pdf
- http://centuriatus.com/images/free-pokemon-go-accounts-level-30_GM1094591345.pdf
- http://centuriatus.com/images/no-scam-free-robux_GM431946152.pdf
- http://centuriatus.com/images/give-me-robux-now_GM431946152.pdf
- http://centuriatus.com/images/coin-master-hack-com_GM406889139.pdf
- http://centuriatus.com/images/coin-master-spin-hack-2021_GM406889139.pdf
- http://centuriatus.com/images/how-to-hack-coin-master-game-without-root_GM406889139.pdf
- http://centuriatus.com/images/free-robux-without-human-verification-2021_GM431946152.pdf
- http://centuriatus.com/images/minecraft-116-1-download_GM479516143.pdf
- http://centuriatus.com/images/free-coin-master-spins-link_GM406889139.pdf
- http://centuriatus.com/images/coin-master-ios-gods-hack_GM406889139.pdf
- http://centuriatus.com/images/roblox-login-hack_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049e8.bin` `fabf1b8e802a474d9682d603178b8ab0fd4688bee5f030c680f3862681e2c6d0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49E8	24648 bytes
`font_01_sfnt_off0000826e.bin` `9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x826E	3124 bytes
`font_02_sfnt_off00008d4d.bin` `578cb632d29792d27323dbfb8f8c4e13070323ba88199216771f9de5c0a4a85a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D4D	18056 bytes

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