PDF malware analysis — malicious · 3bae0cc73f69c935

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 06:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: dd7f15618056cdbbac86c0eb39d428c1 SHA-1: caaf4fcec21990df608c9a9d8a3f81e4e89ae49c SHA-256: 3bae0cc73f69c935af966a8518fa1e49038449f1ccf0eb230b5aa441f4797472

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/406889139/coin-master-hack-2021-ios-game-hack PDF link annotation
- https://www.woundcare-today.com/uploads/files/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-rape_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004f45.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F45	24900 bytes
SHA-256: `95bd0c1e1318a3098823e34d906aed2134ecfc887b1d9b50ba33ae6620541ad4`
`font_01_sfnt_off0000880a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x880A	19444 bytes
SHA-256: `886cb2629f0b0aa3c3ce4aee46783b9366154f7d1cad4a703eab24f72da93c9e`

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