PDF malware analysis — malicious · 50a4a850497a0dac

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 13:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 615aa28862f45450cbdc606c8433b706 SHA-1: e1c10950e2e59287afbe9760ff2313466ac381b7 SHA-256: 50a4a850497a0dac7875f514cc5e5475bb863d43e721e9defbdd89269d8ab181

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 URLs, one of which is directly linked to a malicious ML classification. The presence of these elements suggests the document's primary purpose is to facilitate the download of a second-stage payload, likely through the embedded links.

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/what
- https://www.acacss.com/images/minecraft-hacked-client-18_GM479516143.pdf
- https://www.acacss.com/images/https-oprewards-com-roblox_GM431946152.pdf
- https://www.acacss.com/images/can-i-play-roblox-for-free_GM431946152.pdf
- https://www.acacss.com/images/coin-master-hack-no-human-verification_GM406889139.pdf
- https://www.acacss.com/images/hack-robux_GM431946152.pdf
- https://www.acacss.com/images/minecraft-hacks-list_GM479516143.pdf
- https://www.acacss.com/images/get-free-robux-now_GM431946152.pdf
- https://www.acacss.com/images/mcpe-master-free-coins_GM406889139.pdf
- https://www.acacss.com/images/robux-website_GM431946152.pdf
- https://www.acacss.com/images/minecraft-ps3-free-download_GM479516143.pdf
- https://www.acacss.com/images/how-to-get-free-minecraft-alts_GM479516143.pdf
- https://www.acacss.com/images/coin-master-free-spins-link-download-hack_GM406889139.pdf
- https://www.acacss.com/images/free-coins-coin-master-today_GM406889139.pdf
- https://www.acacss.com/images/minecraft-classic-free_GM479516143.pdf
- https://www.acacss.com/images/free-money-links-coin-master_GM406889139.pdf
- https://www.acacss.com/images/coin-master-game-hack-apk_GM406889139.pdf
- https://www.acacss.com/images/coin-master-35-13-hack-download_GM406889139.pdf
- https://www.acacss.com/images/best-free-spins-for-coin-master_GM406889139.pdf
- https://www.acacss.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdf
- https://www.acacss.com/images/minecraft-pocket-edition-free-apk_GM479516143.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_off000046f9.bin` `e5efbeb9543208e0720a6e251c79096503f3ee573c23bcb93aca719351cac004`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x46F9	25936 bytes
`font_01_sfnt_off000081b5.bin` `ff19be0cad14758b658f08e46864a6c8eb95815c150b505e3e976822d13d62a4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81B5	18608 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.