PDF malware analysis — malicious · ca7c186468bda2b2

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 00:33:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b4e05b21b6203ea6fc4feac85943b9b5 SHA-1: a34118607aa80a217d0e9c4ffcc348a2b65ca148 SHA-256: ca7c186468bda2b2def83cc9a1dd68b577c9e9d8d89de199bf3ea159bba5a640

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and links to a URL known to host game hacks and generators. The presence of multiple links to similar scam-related content and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites. The document body itself contains the primary malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.
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/how-to-get-free-robux-on-ipad-game-hack PDF link annotation
- https://farkas.de/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://farkas.de/images/free-minecraft-addons_GM479516143.pdfIn PDF document text
- https://farkas.de/images/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
- https://farkas.de/images/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
- https://farkas.de/images/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
- https://farkas.de/images/google-moon-active_GM406889139.pdfIn PDF document text
- https://farkas.de/images/is-free-robux-real_GM431946152.pdfIn PDF document text
- https://farkas.de/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://farkas.de/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://farkas.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://farkas.de/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
- https://farkas.de/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- https://farkas.de/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
- https://farkas.de/images/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
- https://farkas.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://farkas.de/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://farkas.de/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
- https://farkas.de/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- https://farkas.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://farkas.de/images/minecraft-java-edition-for-free_GM479516143.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_off00004873.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4873	25568 bytes
SHA-256: `ff590008b715b3630e4366ccad4b360b04ef45e922ef87c139d40c448f00fb00`
`font_01_sfnt_off00008390.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8390	18860 bytes
SHA-256: `df018bfb15659bb80b7243956be10673ebd99e13a4c75edb6b924f306f4c3bfe`

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