PDF malware analysis — malicious · 43fa386aa1ae3c21

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 01:02:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 88dd76de2ecbd63e2049d2513a55fdbf SHA-1: b96467cb7f772e0e20930d1ee9c3f04a956a6943 SHA-256: 43fa386aa1ae3c2156f5a22a753f3499a7e5fd9c5fb3b021a6298bd3b05df636

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to attract users searching for game cheats or mods. The primary URL suggests a lure for a modified version of the Coin Master game, indicating a potential attempt to trick users into downloading unwanted software. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/coin-master-mod-version-free-download-3.4-4-game-hack
- http://pia2000.net/images/get-free-spins-on-coin-master_GM406889139.pdf
- http://pia2000.net/images/how-to-get-free-robux-gift-cards_GM431946152.pdf
- http://pia2000.net/images/spins-for-coin-master_GM406889139.pdf
- http://pia2000.net/images/best-free-minecraft-servers_GM479516143.pdf
- http://pia2000.net/images/get-minecraft-windows-10-free_GM479516143.pdf
- http://pia2000.net/images/minecraft-build-hacks_GM479516143.pdf
- http://pia2000.net/images/free-spins-coin-master-links-app_GM406889139.pdf
- http://pia2000.net/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
- http://pia2000.net/images/how-to-get-free-robux-on-ipad_GM431946152.pdf
- http://pia2000.net/images/coin-master-free-coins-and-spins-link_GM406889139.pdf
- http://pia2000.net/images/free-robux-without-any-verification_GM431946152.pdf
- http://pia2000.net/images/coin-master-hack-no-survey-2021_GM406889139.pdf
- http://pia2000.net/images/minecraft-free-games-no-download_GM479516143.pdf
- http://pia2000.net/images/free-coin-master-hacks_GM406889139.pdf
- http://pia2000.net/images/blogger-free-spins-and-coins_GM406889139.pdf
- http://pia2000.net/images/arsenal-hacks-roblox_GM431946152.pdf
- http://pia2000.net/images/coin-master-game-hack-version-download_GM406889139.pdf
- http://pia2000.net/images/how-to-get-minecraft-pe-for-free_GM479516143.pdf
- http://pia2000.net/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
- http://pia2000.net/images/how-to-get-free-cards-sets-for-coin-master_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_003_off0000472d.bin` `d28a19f60e1a00379a5115c129b633485d0b020609d8c871d9414929278523f5`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x472D	24236 bytes
`font_01_sfnt_off00007e93.bin` `ad22a82d8b3233edb38f402cd3e5013c6375fd48aabf823ea78d744f504abdc7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E93	18728 bytes

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