PDF malware analysis — malicious · 10901daef48d0611

MALICIOUS

PDF

44.5 KB Created: 2021-05-15 16:32:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 62230a5ed9e88d539af07e17499eacf2 SHA-1: a25beaa9804eacd205dd238fa89ff141837e37b3 SHA-256: 10901daef48d0611630593d08be863afbc057fa5cc130dbedca081d5b98332e9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The document presents a fake CAPTCHA and download lure, directing users to external URLs that offer "free Robux" or game hacks. The presence of embedded JavaScript, although not explicitly detailed in the provided evidence, is a common method for executing malicious actions within PDFs. The primary goal appears to be tricking users into visiting malicious sites or downloading further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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-robux-codes-no-verification-2021-game-hack
- https://septik-montag.ru/images/weird-roblox_GM431946152.pdf
- https://septik-montag.ru/images/how-to-play-roblox-for-free_GM431946152.pdf
- https://septik-montag.ru/images/minecraft-app-free-download_GM479516143.pdf
- https://septik-montag.ru/images/coin-master-hack-programers_GM406889139.pdf
- https://septik-montag.ru/images/village-4-coin-master_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-free-spins-ios_GM406889139.pdf
- https://septik-montag.ru/images/free-robux-no-verification-required_GM431946152.pdf
- https://septik-montag.ru/images/coin-master-2021-free-spins-link-today_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-hack-tuts_GM406889139.pdf
- https://septik-montag.ru/images/how-to-get-hacks-on-roblox_GM431946152.pdf
- https://septik-montag.ru/images/coin-master-card-collection-hack-2021_GM406889139.pdf
- https://septik-montag.ru/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
- https://septik-montag.ru/images/free-robux-today_GM431946152.pdf
- https://septik-montag.ru/images/robuxmatch-com-free-robux_GM431946152.pdf
- https://septik-montag.ru/images/get-coin-master-spins-free_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-pet-food-free_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-official-page_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-free-daily-spins-and-coins_GM406889139.pdf
- https://septik-montag.ru/images/coin-master-hack-2021-ios-download_GM406889139.pdf
- https://septik-montag.ru/images/free-robux-survey_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_off00004bb3.bin` `0a956eb838b264027fea10468ea8b8f85c86d05a54f962f6d8f3b1762a7afe65`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BB3	26440 bytes
`font_01_sfnt_off000088f3.bin` `db1e34f64d78c47646929d75ef8e7d82dfccacc985d29653851fea35b3c0bf96`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88F3	19176 bytes

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