Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f6c9883bd2d6bc…

MALICIOUS

PDF

35.2 KB Created: 2021-07-07 12:19:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 997d7a0ab54ed4a20288f83a26dc73ae SHA-1: 73e9c7a33ce06e0d60a1f0c3da78cb830edf3c31 SHA-256: f2f6c9883bd2d6bcffe230ebd5f3ac6104ae51021d91634fe1a9cf0b98027303
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which appear to be related to game hacks and cheats, suggesting a lure for users seeking such content. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking links that could lead to malware downloads or phishing sites. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/835599320/tiktok-free-view-59-game-hack
    • https://zustsearch.com/uploaded_files/userfiles/files/nuevo-hack-de-robux-2021-funicona_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-fan-page-facebook_GM406889139.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-hack-version_GM406889139.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-no-verification-needed_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/all-robux-promocodes-no-hacking_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-online-free-no-download_GM479516143.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/how-to-get-1-million-robux-on-roblox-for-free_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-ban-ban-hammer-roblox_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-codes-no-verfacation-no-survey_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/rbxfree-com-free-robux-2021_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/robux-for-free-no-survey-2021_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-unlimited-free-spins_GM406889139.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/robux-hack-free-robux_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/penguin-roblox-free_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/roblox-dragon-ball-fury-cheat-engine_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdf
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-and-tix-hack-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f3.bin
bdd71e1c4cb55e0a4dbee56f27a65a40fcfef56d59bb69822fcf8d3347c1f0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33F3 22368 bytes
font_01_sfnt_off000065e0.bin
7dc6885a6f20bf0be4ed42a542e1a303df4ad0923424dc9dee00985bc4b46523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E0 18568 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.