PDF malware analysis — malicious · 0821f1b6d0a017ce

MALICIOUS

PDF

46.0 KB Created: 2021-06-02 23:13:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 17abd25fcc2f50c1cd83f8d884f501bb SHA-1: 548aebbcbf4d8b00fdbc93fc27207e11577e7133 SHA-256: 0821f1b6d0a017ce5657979dac47692e6ec862bd9133e4a5331421a1b214ad61

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which are disguised as download links for popular games and software. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. The document body itself is heavily obfuscated and contains references to game hacks and exploits.

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.xyz/app/431946152/roblox-hack-for-synapse-x-game-hack
- https://www.acacss.com/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
- https://www.acacss.com/images/bad-minecraft-free_GM479516143.pdf
- https://www.acacss.com/images/all-minecraft-handbooks_GM479516143.pdf
- https://www.acacss.com/images/get-free-robux-no-human-verification_GM431946152.pdf
- https://www.acacss.com/images/free-robux-gift-card-codes-2021_GM431946152.pdf
- https://www.acacss.com/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
- https://www.acacss.com/images/rbxoffers-com-free-robux_GM431946152.pdf
- https://www.acacss.com/images/how-to-get-roblox-credit-for-free_GM431946152.pdf
- https://www.acacss.com/images/how-to-get-free-robux-2021_GM431946152.pdf
- https://www.acacss.com/images/pubg-uc-or-pc_GM1330123889.pdf
- https://www.acacss.com/images/daily-free-spins-and-coins-coin-master_GM406889139.pdf
- https://www.acacss.com/images/roblox-how-to-get-free-clothes_GM431946152.pdf
- https://www.acacss.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
- https://www.acacss.com/images/coin-master-hack-tool-exe_GM406889139.pdf
- https://www.acacss.com/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdf
- https://www.acacss.com/images/free-disney-plus-accounts-tiktok_GM835599320.pdf
- https://www.acacss.com/images/free-100-robux_GM431946152.pdf
- https://www.acacss.com/images/minecraft-free-android_GM479516143.pdf
- https://www.acacss.com/images/roblox-booga-booga-speed-hack_GM431946152.pdf
- https://www.acacss.com/images/is-coin-master-hacks-safe_GM406889139.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_off0000543a.bin` `57b2478ad1eb47dca705d87293be3032dcb78018fb780d45e4c2474c91f2663c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x543A	25672 bytes
`font_01_sfnt_off00009029.bin` `e0ebda498bdd568a5121466002a2027d2ec0d4c29c3bfb472627ab07d888af5f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9029	18700 bytes

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