Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6357add956af42…

MALICIOUS

PDF

245.7 KB Created: 2021-04-04 13:02:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 51f8161483602d4529c6788d76b6fb24 SHA-1: 40cd4c3bb91a07ae1548d4c5c65a5d9bc29c8dca SHA-256: 6b6357add956af42fa01d2c4e6a95502b03ad0988676bbd7432e15fb734ebf5e
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Pdf.Phishing.Roblox062100-9873116-0. It contains numerous URLs, including one at http://gaminggenerator.org/app/431946152/free-robux-without-a-human-verification, which is presented as a lure for free Robux. The presence of a download button heuristic further supports the phishing and potential malware distribution intent. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.2292

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/free-robux-without-a-human-verification PDF link annotation
    • http://teknotools.net/images/free-quick-robux.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/what-to-do-if-your-roblox-acc-has-been-hacked.pdfIn PDF document text
    • https://koeltotaal.com/images/noclip-hack-roblox-jailbreak-download.pdfIn PDF document text
    • http://eooe.gr/images/how-to-give-yourself-robux-by-hacking.pdfIn PDF document text
    • https://gzog.pl/images/ho-to-get-min-on-roblox-for-free.pdfIn PDF document text
    • http://www.occquimica.com.br/images/roblox-how-to-get-free-robux-in-2021.pdfIn PDF document text
    • https://www.yewtreealpacas.co.uk/images/how-to-block-games-on-roblox-for-free.pdfIn PDF document text
    • https://asesoriamss.com/images/roblox-jailbreak-new-hack.pdfIn PDF document text
    • https://gzog.pl/images/the-only-free-robux-game-that-works1.pdfIn PDF document text
    • http://tecnodue.com/images/how-to-hack-roblox-moon-tycoon.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-no-survey-no-download-2021-ios.pdfIn PDF document text
    • http://joshherman.com/images/roblox-hack-account-robux-free.pdfIn PDF document text
    • http://behsanroshd.com/images/free-preston-roblox-merch-catolog.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-roblox-robux-generator-no-human-verification-or-survey.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-synapses-free-trial.pdfIn PDF document text
    • https://amatq.ca/images/300-free-robux.pdfIn PDF document text
    • https://arcasict.nl/images/como-hackear-cuentas-de-roblox-facil.pdfIn PDF document text
    • https://www.porthos.it/images/synapse-hack-roblox-murder-mystey.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-400-robux-promo-code.pdfIn PDF document text
    • http://cristalysoptic.com/images/base-raiders-roblox-hack.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/roblox-level-7-free-exploit.pdfIn PDF document text
    • https://www.fhccu.com/images/roblox-number-to-get-free-robux.pdfIn PDF document text
    • http://getthelook-bkk.com/images/hack-para-texting-simulator-roblox-bitoneum.pdfIn PDF document text
    • http://aeroclub-kaernten.at/images/roblox-booga-booga-fly-hack-may-26.pdfIn PDF document text
    • http://www.prylfabriken.se/images/comment-avoir-admin-commande-for-free-roblox.pdfIn PDF document text
    • https://estalagemmonteverde.com.br/images/how-to-hack-retail-tycoon-roblox-2021.pdfIn PDF document text
    • https://www.audipec.com.br/images/roblox-mod-oder-hack-new-version-apk.pdfIn PDF document text
    • https://www.audipec.com.br/images/jailbreak-beta-roblox-hack-dll.pdfIn PDF document text
    • https://www.cnte.org.br/images/roblox-hacks-and-cheats-no-survey.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-robux-hack-instantly.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
stream_003_off00037b55.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37B55 22616 bytes
SHA-256: c102adf5d8c9d677fae5a06e33a0e2e92416da6c90d35002cd12e64561597147
font_01_sfnt_off0003adcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ADCD 18920 bytes
SHA-256: e61b47b9a550910770ee00bf3e5601d0a6c7958e41621d873dfb4d4ddf28b09f

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