PDF malware analysis — malicious · dc18a8a7dc9655ac

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 05:23:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1162c39d9e7b7241731c44d545236685 SHA-1: a1ca8a3a789d4e8fcfcb96ae1db14b0f570f03ad SHA-256: dc18a8a7dc9655acbcea29900a37a5124a661186e3d0b04f2d5b207f381f9708

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or download button to trick the user into clicking a malicious link. The ML classifier also flagged this PDF as malicious. The embedded URL and numerous other similar URLs suggest a phishing or scam attempt related to game rewards.

Machine Learning

Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.online/app/406889139/coinmaster-rewards-game-hack
- http://vetmed.fkh.unair.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/get-free-robux_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/wurst-minecraft_GM479516143.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/minecraft-windows-10-free_GM479516143.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-coin-master-coins_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/tiktok-likes-free_GM835599320.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-coins-coin-master-no-human-verification_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/150-free-spins-coin-master_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-minecraft-worlds_GM479516143.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-coin-master-game_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-robux-no-generator_GM431946152.pdf
- http://www.vetmed.fkh.unair.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdf
- http://vetmed.fkh.unair.ac.id/repository/coin-master-codes_GM406889139.pdf
- http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-on-roblox_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_004_off00005149.bin` `4c91b802e8ee483e9a4b91fd853f9f03d33eacec644285000502d0f8d8784d34`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5149	24736 bytes
`font_01_sfnt_off0000888d.bin` `b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x888D	2880 bytes
`font_02_sfnt_off00009278.bin` `3304910cf416930b47305d75e02d2266dd9cc93df9b4dcfa32843af2f30c9813`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9278	18144 bytes

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