Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f384aa62e88cde…

MALICIOUS

PDF

240.8 KB Created: 2021-04-05 06:09:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dfb44459df73d06ff556e9822127b210 SHA-1: 9f5fb56c8a1e55c0667cad98796ac6966c7946e3 SHA-256: 33f384aa62e88cdef7927f80f828a469704cd7b6294dc79b645769458ebe42c2
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains heuristics indicating it's a phishing lure related to 'Free Robux' and employs social engineering tactics like clipboard command lures and visual download buttons. The presence of an external URI pointing to a 'free robux generator' website, combined with ClamAV detection as 'Pdf.Phishing.Roblox062100-9873116-0', strongly suggests a phishing attack. The document likely aims to trick users into executing commands via the Run dialog or a terminal, a common tactic to bypass security measures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5773

Heuristics 6

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/free-robux-generator-with-color-verification-2021 PDF link annotation
    • http://batutynas.lt/images/free-robux-2021-easy-no-working.pdfIn PDF document text
    • http://dialine.cz/images/how-to-hightspeed-roblox-with-cheat-engine-torso.pdfIn PDF document text
    • http://homequeen.de/images/roblox-tycoon-hack-scripts.pdfIn PDF document text
    • https://www.laarsenco.nl/images/free-robux-2021-febuary-easy.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/roblox-epic-minigames-hack-2021.pdfIn PDF document text
    • https://hassel-event.de/images/roblox-how-to-hack-grand-blox-auto-with-cheat-engine.pdfIn PDF document text
    • https://ghpa.ru/images/free-robux-codes-unused.pdfIn PDF document text
    • https://www.ergolight.at/images/get-free-robux-and-tix-for-roblox-work.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/alone-battle-royale-hacks-roblox.pdfIn PDF document text
    • https://www.hotschool.com.au/images/roblox-jailbreak-hacks-download-free.pdfIn PDF document text
    • http://giolantapepe.gr/images/robux-hack-no-download-or-survey.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-get-free-robux-for-free-on-ipad.pdfIn PDF document text
    • http://batterikungen.se/images/open-roblox-hack-script.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roblox-pet-simulator-cheats-mobile.pdfIn PDF document text
    • https://shimony.net/images/roblox-retail-tycoon-hack-script.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-generator-easy.pdfIn PDF document text
    • https://bancroftandsons.com/images/how-to-use-inspect-element-to-get-free-robux.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-fly-hack-in-roblox-cheat-engine.pdfIn PDF document text
    • https://www.ukrtrans.biz/images/free-robux-no-verification-and-no-survey.pdfIn PDF document text
    • http://ilcommercialista.info/images/roblox-pants-template-download-free.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36AB7 21600 bytes
SHA-256: 1702e74ef461b83c49e00d55906980a307528438a2679e3ab70043bebeb80fed
font_01_sfnt_off00039a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39A46 19132 bytes
SHA-256: 0da51b479f65817367b320f79873fe8de753bac7792601c238b292ab16cc241f

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