Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d453943bae6271…

MALICIOUS

PDF

252.2 KB Created: 2021-04-04 09:29:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4b470a526137d5d2c3dd03248b8f6c5f SHA-1: 263ddda2d88a3017563425774256fa2d71cb6694 SHA-256: 21d453943bae627187142233a1789d178fad7bd76f427418510e6d57b46f1bcf
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV with a specific signature indicating it's a phishing attempt related to Roblox. The document body and extracted URLs consistently point towards lures for hacking Roblox, suggesting the primary goal is to trick users into downloading further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a potential for exploiting PDF vulnerabilities or embedding malicious links, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier clean score 0.1358

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/how-to-hack-roblox-games-without-cheat-engine-2021 PDF link annotation
    • http://posterprintshop.nl/images/jaibreak-hack-roblox-script-auto-aresst.pdfIn PDF document text
    • http://kulturhusbabberich.nl/images/comandos-para-free-admin-roblox.pdfIn PDF document text
    • http://erntefest2016.de/images/how-to-hack-rs-in-roblox.pdfIn PDF document text
    • http://pdapanache.com/images/how-to-get-free-robux-without-downloading-anything-2021.pdfIn PDF document text
    • http://bagna.pl/images/assisin-roblox-hack.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-robux-la-plus-facile.pdfIn PDF document text
    • http://intrasservices.com/images/free-abilities-for-twisted-murderer-on-roblox-hack.pdfIn PDF document text
    • http://prodent.com.ua/images/roblox-studio-free.pdfIn PDF document text
    • http://getthelook-bkk.com/images/i-need-robux-for-free.pdfIn PDF document text
    • https://amatq.ca/images/hack-roblox-accounts-with-robux.pdfIn PDF document text
    • https://corbo.ru/images/bradwski-free-robux.pdfIn PDF document text
    • http://safwafurniture.com/images/when-you-you-download-roblox-is-it-free.pdfIn PDF document text
    • http://alexandrion.com/images/free-robux-accounts-usernames-and-passwords.pdfIn PDF document text
    • http://museumkk.ru/images/fun-and-free-games-on-roblox.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-use-cheat-engine-67-on-roblox-booga-booga.pdfIn PDF document text
    • http://daksz.hu/images/roblox-cheat-xbox-one-argent.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/unlimited-robux-hack-pastebin.pdfIn PDF document text
    • http://www.boic.nl/images/get-free-robux-with-javascript-and-raw-paste.pdfIn PDF document text
    • https://www.fhccu.com/images/nuvos-hack-de-roblox-6-05-2021.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-roblox-gift-card-codes-2021-not-used.pdfIn PDF document text
    • https://bgescc.com/images/roblox-cheat-codes-from-nitro-fun.pdfIn PDF document text
    • https://studentcareerinfo.com/images/free-robux-tips-and-tricks.pdfIn PDF document text
    • http://www.rezbb.sk/images/protosmasher-roblox-free-download.pdfIn PDF document text
    • http://pia2000.net/images/promo-code-hack-roblox.pdfIn PDF document text
    • http://eooe.gr/images/roblox-boog-booga-hack-le-miyeur.pdfIn PDF document text
    • http://www.cuniv-naama.dz/images/btools-roblox-hack-2021.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/how-to-get-the-elite-radio-in-roblox-free.pdfIn PDF document text
    • https://sdg-trade.com/images/roblox-dll-hacks.pdfIn PDF document text
    • http://cadcam.no/images/best-free-roblox-schirts.pdfIn PDF document text
    • http://linde-erbach.de/images/free-groups-to-claim-roblox.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_off00038e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38E71 23736 bytes
SHA-256: 4c289685e9b598fdebc4f2fbf7f5b9a4be44cba790d829aef6bd86ac63ebd9bf
font_01_sfnt_off0003c3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C3A9 19596 bytes
SHA-256: e1d6cd33aff1c33b208fcc5062507d6a9a4ab3f21a8307dbad4ac84c8de3ca5d