PDF malware analysis — malicious · 66f68b88ee628f4a

MALICIOUS

PDF

40.9 KB Created: 2021-04-29 08:58:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: ee090b3419bf7a0ec129f9a2ee4823a1 SHA-1: a5a1b6456b833b7dd974c354551e24ddf2fecea3 SHA-256: 66f68b88ee628f4a65bc3961d7442eaa32dae3952c19f26f2dc36430a5b5da07

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action to a "free Robux generator" for Roblox, a common lure for scams. The document also contains instructions to disable security software, indicating a malicious intent to bypass defenses. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it is designed to redirect users to potentially malicious websites or download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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.
Security software disable instruction high SE_SECURITY_BYPASS

Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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/roblox-free-robux-hack-2021-game-hack PDF link annotation
- https://www.malesse.com/ckfinder/userfiles/files/free-robux-on-ipad-pro.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/roblox-cheat-codes-for-robux-2021.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/roblox-edit-money-value-cheat-2021.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/roblox-hack-for-android-apk.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/silent-assassin-cheats-roblox.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/get-a-free-promo-codes-for-roblox.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/descargar-hack-pc-robux.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/roblox-how-to-get-free-hats.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/descargar-roblox-hackeado-para-pc.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/crimson-roblox-hack.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_off00004062.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4062	26172 bytes
SHA-256: `bab0b6b9330d0bcca296530a085834fe8bef43b85fe44238fa3678cf7280a280`
`font_01_sfnt_off00007c39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C39	18888 bytes
SHA-256: `3518e0e0a6ecefa88ca6c9d1f4d6dccaac42ea2a2f6ce3d56b9c57074111045e`

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