PDF malware analysis — malicious · c4368ef36a41d6ae

MALICIOUS

PDF

46.6 KB Created: 2021-06-13 17:14:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 732a87e4599608c90b5ea78a8845d691 SHA-1: 4c6bef829b51b0ad481aa556cf5668a0e690c94c SHA-256: c4368ef36a41d6ae7936e4669ef5a2720e44d1e71f3befa73b32fb8d97b34ce3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document displays a fake CAPTCHA to lure the user into clicking a link, which likely leads to the download of a malicious payload. The presence of multiple URLs pointing to game-related cheats and hacks suggests a social engineering attempt to trick users into executing potentially harmful files. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

Heuristics 4

Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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/jailbreak-roblox-cheats-cage-game-hack
- http://vetmed.fkh.unair.ac.id/repository/saber-simulator-roblox-hack-script_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/hack-the-game-coin-master_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/coin-master-hack-xyz_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/coinmaster-spin-ml-link_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/apps-for-free-robux_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-robux-com-2021_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/robux-generator-without-verification_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-tiktok-followers-real_GM835599320.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-roblox-website_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/rbx-place-free-robux_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-rare-cards_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/cheat-codes-for-coin-master_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/where-to-find-roblox-speed-hacks_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-robux-only-username_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/oprewards-free-robux_GM431946152.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_off000051d1.bin` `090f49cc98fc2ef28ae1dd87e11aa86986c1f870d4e822ed366126739637d7fc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51D1	27652 bytes
`font_01_sfnt_off0000914c.bin` `665bbdc819e83a638dfa986595c6772a5004fa719aee0064418ee212fe6a436f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x914C	19024 bytes

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