PDF malware analysis — malicious · 1a657fef1f528f80

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 20:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6dcc6ddb52ecaf9ea7c0bb921f2abcd9 SHA-1: bc062fcc6144daf8f6f508ef3fa2b5f8a2e066e2 SHA-256: 1a657fef1f528f80b90c7907ec23fde46103edc869fd7f800dfefda67428c7f8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document. It also embeds external URIs pointing to what appear to be game hack download sites. The ML classifier strongly indicates maliciousness, suggesting the document is intended to lead the user to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-draw-roblox-game-hack
- https://heimatverein-oberlangen.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/coin-master-free-spins-link-2021_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/how-to-get-hacks-on-roblox_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/minecraft-apk-114_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/free-spins-coin-master-without-survey_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/can-you-give-me-free-robux_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/coin-master-game-hack-app_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/roblox-games-that-give-you-free-robux_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/free-pe_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/coin-master-daily-free-spins-2021_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/oprewards-points-generator_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/coin-master-free-spin-codes_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/coin-master-free-spins-cheat_GM406889139.pdf
- https://heimatverein-oberlangen.de/images/minecraft-mod-menu-apk_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/minecraft-free-no-download_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/free-minecraft-printables-food-labels_GM479516143.pdf
- https://heimatverein-oberlangen.de/images/free-roblox-accounts-with-robux-2021_GM431946152.pdf
- https://heimatverein-oberlangen.de/images/how-to-get-free-robux-hack-2021_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_003_off0000476f.bin` `ded4531619375f60540123c84b4d5585322fb20edd766a8e23bcda1c166508c4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x476F	26032 bytes
`font_01_sfnt_off00008292.bin` `f910b5e05dc090141321478ad8f2371d3108a4bfaceab19230c4d52c6f4382ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8292	18508 bytes

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