PDF malware analysis — malicious · e0a83934bafc1f07

MALICIOUS

PDF

45.5 KB Created: 2021-06-07 15:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: f08bb4fce482bba060a2a796d6181418 SHA-1: 738c49647b4c405ea9d4b4c8a70cedff3286de69 SHA-256: e0a83934bafc1f07043fd0dc464cd92e784eaf936275a56cf5d062a93ec1e084

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links to external PDF files, many of which appear to be related to 'Robux' or 'Coin Master' hacks, suggesting a scam or phishing attempt. The ML classifier also flagged this PDF as malicious with a high probability. The document body, though heavily obfuscated, contains references to 'Free Robux' and URLs, reinforcing the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

Heuristics 4

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.
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.tw/app/431946152/free-robux-2021-10-working-legit-game-hack
- http://sudamericarural.org/images/how-do-u-hack-roblox_GM431946152.pdf
- http://sudamericarural.org/images/how-to-get-free-robux-instantly_GM431946152.pdf
- http://sudamericarural.org/images/how-to-hack-roblox-for-robux_GM431946152.pdf
- http://sudamericarural.org/images/how-to-hack-in-roblox-prison-life_GM431946152.pdf
- http://sudamericarural.org/images/coin-master-hack-pro-gamers-com_GM406889139.pdf
- http://sudamericarural.org/images/free-robux-2021-no-verification_GM431946152.pdf
- http://sudamericarural.org/images/free-roblox-music-sound-ids_GM431946152.pdf
- http://sudamericarural.org/images/coin-master-hacks-no-surveys_GM406889139.pdf
- http://sudamericarural.org/images/www-bloxburg-club-free-robux_GM431946152.pdf
- http://sudamericarural.org/images/how-to-get-free-robux-without-verification_GM431946152.pdf
- http://sudamericarural.org/images/how-do-you-get-roebucks_GM431946152.pdf
- http://sudamericarural.org/images/fbchampion_GM406889139.pdf
- http://sudamericarural.org/images/minecraft-survival-hacks_GM479516143.pdf
- http://sudamericarural.org/images/free-spins-coin-master-no-survey_GM406889139.pdf
- http://sudamericarural.org/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
- http://sudamericarural.org/images/coin-master-free-spins-link-blogspot_GM406889139.pdf
- http://sudamericarural.org/images/free-minecraft-account-generator_GM479516143.pdf
- http://sudamericarural.org/images/coin-master-daily-rewards-link_GM406889139.pdf
- http://sudamericarural.org/images/oprewards-free-robux_GM431946152.pdf
- http://sudamericarural.org/images/free-account-roblox-with-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_004_off0000517f.bin` `adf49d71e46b7331b57c14b8ed4dd2aa73b20a7462038ec80faf6ab5ba06dcc2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x517F	25256 bytes
`font_01_sfnt_off00008c24.bin` `443e2dfde71ece2c57eb71715ecaaa30927b8d46a10a3c03168489116024d527`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C24	19296 bytes

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