PDF malware analysis — malicious · d347c5445e6f1877

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 18:32:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 8a10d6ac94b2c8f8d4a2f4db18000274 SHA-1: db6c531ab8fb51ce3b2435cd4bda17dcc735a7b0 SHA-256: d347c5445e6f1877fcc115ebd54fe17e80087893271908fec4aaca5d6b172057

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document uses a lure related to game hacks and free in-game currency to entice users to click on a malicious URL. The embedded URL, http://netcdn.tw/app/431946152/free-things-on-roblox-game-hack, is flagged as a redirector for game hacks. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is designed to lead users to a potentially harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9983

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 http://netcdn.tw/app/431946152/free-things-on-roblox-game-hack PDF link annotation
- https://www.cinemapalace.ro/trailer/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/free-mobile-24-robux_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/menu-hacks-kupkake-roblox_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/roblox-free-terminated-accounts_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/download-robux-online-hack_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/cheat-speed-city-roblox_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/how-to-hack-on-roblox-murder_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/hackear-y-tener-robux_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/final-stand-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/hacks-de-roblox-may-2021_GM431946152.pdfIn PDF document text
- https://www.cinemapalace.ro/trailer/files/op-roblox-hacks_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
`font_00_sfnt_off000031c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C2	22672 bytes
SHA-256: `1c8db7e0b7e2fcf83edafe47a984b9837b7a3620aa2908a46d23f86fd5156095`
`font_01_sfnt_off00006423.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6423	18936 bytes
SHA-256: `c4e611ffc66a9f2ae011f0cbe0d3da0ebe01f9ded7cacf33f871c84d0f478745`

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