PDF malware analysis — malicious · a66fb1f79789b494

MALICIOUS

PDF

50.2 KB Created: 2021-05-10 17:40:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1a9120634cacf0d16be7e3e658275e8c SHA-1: 6c8ada316f4f289863d786d5dd52bb63b5cbd0d4 SHA-256: a66fb1f79789b494951bba1858cde1695b3dcb3741591a14b3d1093bacadbdb6

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are related to free Robux or game hacks, indicating a lure for potentially malicious content or credential harvesting. The presence of a 'MFA / one-time-code harvesting lure' heuristic further suggests a phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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/funblox.xyz-free-robux-game-hack
- https://www.vizyonproduction.com/application/uploads/assets/files/give-free-robux_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/hack-coin-master-link_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-with-no-verification_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/robux-generator-no-human-verification_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/heroes-online-roblox_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spins-uk_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/legitimate-coin-master-free-spins-apk_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/hackear-juego-coin-master_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-minecraft-java-for-free_GM479516143.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-daily-spins-link_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/bux-gg-robux-free_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-hack-no-verification-ios_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/legit-free-spins-coin-master_GM406889139.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-without-human-verification-2021_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/free-texture-packs-for-minecraft-pe_GM479516143.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-story-mode-free_GM479516143.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-apps-that-work_GM431946152.pdf
- https://www.vizyonproduction.com/application/uploads/assets/files/easy-way-to-get-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004e2e.bin` `fcf407710e7183eff2d7e8d59088e35feba9eb081026488d935c1eb381dae57e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E2E	38800 bytes
`font_01_sfnt_off0000a21d.bin` `094e3ad3acb05c69538296255af77c281e929786c4e47907665e7e86d1bfa11c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA21D	18416 bytes

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