PDF malware analysis — malicious · ee8cac0d0a87b0c6

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 22:12:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 567dfaae9d0019906ec18a12f3c8714b SHA-1: 288e8c72d8369dcf514f0ef708d9af4f97d66df6 SHA-256: ee8cac0d0a87b0c6c77325bcc83dd257e5795949cf4ca7155ded824926d9b6e6

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 users into interacting with the document. It also embeds external URLs, one of which is directly linked to a potential scam or malware download. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the presence of embedded URLs and the fake CAPTCHA heuristic suggest a social engineering attack aimed at user interaction and potential payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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/coin-master-heaven-free-spins-game-hack
- https://pustaka.mic.sch.id//repository/coin-master-free-coins-link_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/coin-master-official-fan-page_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/free-coin-master-spins-blogger_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-robux-please_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/how-to-get-free-robux-without-any-verification_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/coin-master-free-spins-16-04-19_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/can-u-get-free-robux_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/robux-gratis_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/free-robux-com_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/coin-master-spin-link_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-spins-on-coin-master_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-robux-glitch_GM431946152.pdf
- https://pustaka.mic.sch.id//repository/free-coin-master-spins-link_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-spins-from-coin-master_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdf
- https://pustaka.mic.sch.id/repository/tiktok-free-views_GM835599320.pdf
- https://pustaka.mic.sch.id//repository/free-spins-coin-master-2021_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-spins-coin-master-no-verification_GM406889139.pdf
- https://pustaka.mic.sch.id//repository/free-coins-coin-master_GM406889139.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_off0000514a.bin` `eac19b261af850f7f85c49c354ff7e6ab5a6e32aca1c3b4049195684776691e3`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x514A	24952 bytes
`font_01_sfnt_off00008a5e.bin` `6cee86ead4aeee921a3b6e14ddf6eb594f4a141ca364aa42231f8e25adb97f4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A5E	18000 bytes

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