PDF malware analysis — malicious · a2e88e5726cfacbd

MALICIOUS

PDF

48.8 KB Created: 2021-06-04 00:56:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 917afc0c8004fa256a2b0d666c79d9aa SHA-1: 8d16067658737ac2ab46b70f6a514bbcc4885f8e SHA-256: a2e88e5726cfacbd6442a7b183c39925694917a42389f5e1d2f7d7d2696d327d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The primary URL, https://netcdn.online/app/431946152/robux-generator-that-works-game-hack, suggests a scam related to game cheats. While no scripts were extracted, the presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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/431946152/robux-generator-that-works-game-hack
- https://opac.umrah.ac.id/repository/coin-master-hack-apk-app_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-hack-2021-android-apk_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-coins-free_GM406889139.pdf
- https://opac.umrah.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-free-cards-2021_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdf
- https://opac.umrah.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-free-spins-save_GM406889139.pdf
- https://opac.umrah.ac.id/repository/free-coin-master-cards_GM406889139.pdf
- https://opac.umrah.ac.id/repository/free-robux-scam_GM431946152.pdf
- https://opac.umrah.ac.id/repository/free-robux-app-real_GM431946152.pdf
- https://opac.umrah.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdf
- https://opac.umrah.ac.id/repository/free-coin-master-generator_GM406889139.pdf
- https://opac.umrah.ac.id/repository/roblox-script-hack_GM431946152.pdf
- https://opac.umrah.ac.id/repository/tiktok-follower-bot-free_GM835599320.pdf
- https://opac.umrah.ac.id/repository/coinmasterfree_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdf
- https://opac.umrah.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdf
- https://opac.umrah.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdf
- https://opac.umrah.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004f48.bin` `920e1b5318273dd89cf92ad501fa44d95ed39055c935e230b45d5345d651ce00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F48	24824 bytes
`font_01_sfnt_off0000889b.bin` `a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x889B	7448 bytes
`font_02_sfnt_off00009a7e.bin` `15f7490cbb63360669c63d4e0309a96c1c9c92749ad38ff6b0bd5fc046bedbd7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A7E	18716 bytes

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