Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99bfac4a2e2031a…

MALICIOUS

PDF

262.4 KB Created: 2021-04-05 15:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 952bf6d36c7678ca61c4ef0c7013c94b SHA-1: f06cb15f95ff6260b29cf5635cae214ef3606855 SHA-256: c99bfac4a2e2031a82bae9b038546035b991162cc2a570aa2d3ee3fa504922c5
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a specific signature indicating it's a phishing attempt related to Roblox. The document contains external URLs that promise cheat codes and free Robux, and includes a heuristic for a download button lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely using embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier clean score 0.1950

Heuristics 4

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • 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://gaminggenerator.org/app/431946152/dungeon-life-roblox-cheat-codes
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-roblox-accounts-full-with-roebucks.pdf
    • http://prodent.com.ua/images/dino-sim-roblox-apk-to-albino-terror-for-free.pdf
    • http://meisterhaus-guterl.de/images/release-hack-roblox.pdf
    • http://elektrofahrspass.de/images/legends-of-speed-roblox-hack.pdf
    • http://sealysports.com/images/roblox-jailbreak-nuevo-menu-de-hacks-actualizado-rocket-fuel.pdf
    • http://s-punkt-objects.de/images/roblox-game-where-you-get-free-robux.pdf
    • http://sintraelecol.org/images/roblox-team-changer-hack.pdf
    • http://dygmotors.com.py/images/how-to-get-free-cars-in-jailbreak-roblox.pdf
    • https://zsdunajskaluzna.sk/images/roblox-royal-high-school-hack.pdf
    • https://liftkos.com/images/roblox-jailbreak-hack-script.pdf
    • http://junktiquecollector.com/images/how-to-cheat-on-roblox-for-robux.pdf
    • https://kierowcyhgv.uk/images/flame-gg-robux-free.pdf
    • https://www.dressel-immobilien-mv.de/images/roblox-any-way-to-make-robux-for-free.pdf
    • https://www.gymun.cz/images/baby-simulator-hack-roblox.pdf
    • http://ff-klaffenbach.de/images/free-robux-hack-november-2021.pdf
    • http://consultinggirona.es/images/roblox-hack-no-download-or-surveys.pdf
    • http://bb-im2.com/images/easy-free-robux-2021.pdf
    • http://tegeler-segler.de/images/how-to-make-a-roblox-hack-with-lua.pdf
    • https://shop.bellmann-muenzen.de/images/roblox-anime-tycoon-cheats.pdf
    • http://ilccanada.org/images/how-to-get-free-roblox-with-ihax-games.pdf
    • http://www.cosver.nl/images/free-skateboarding-game-on-roblox.pdf
    • http://www.actae.gr/images/rbx-points-get-free-roblox.pdf
    • http://solidcommunication.ch/images/how-to-hack-a-piano-in-roblox.pdf
    • https://open-coffee-drimmelen-geertruidenberg.nl/images/royale-high-roblox-hacks.pdf
    • http://beagle-cindy.de/images/tp-hacks-script-roblox.pdf
    • http://plantas.net/images/dead-mist-2-hack-roblox.pdf
    • http://jijel.info/images/how-to-get-wings-free-in-roblox.pdf
    • http://centralbasinroofing.com/images/free-robux-codes-no-survey-2021.pdf
    • http://mittlenberg.ch/images/free-robux-form-watch-ads.pdf
    • http://artion.biz/images/free-roblox-codes-to-get-robux.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00039951.bin
89b24ff1d8796c96e1bf9d434035a758ce392906480d51c89d63f423250f52c6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x39951 26392 bytes
font_01_sfnt_off0003d4d4.bin
154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D4D4 11440 bytes
font_02_sfnt_off0003eff5.bin
62663001cdeb51905f289949cba2f4113de1925a78a29d39316fc9ef2c012304		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EFF5 18760 bytes

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