Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec86a138ee203dc…

MALICIOUS

PDF

243.5 KB Created: 2021-04-04 10:54:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b5865023a14b4d39968eaf9da563019c SHA-1: d2a14e99fbf2e15a258aaec2ed459f51c6504410 SHA-256: aec86a138ee203dc48a02abe0bc98c0274396867d6520e56cd8a9d8cef4b5bd1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as a phishing lure by ClamAV and heuristic analysis, presenting itself as an image with a clickable download button. It contains numerous URLs pointing to sites offering 'free Robux' or 'hacks' for Roblox, a common lure for credential harvesting or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1227

Heuristics 5

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 243 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/roblox-novlcip-hacks PDF link annotation
    • http://torkelson.se/images/free-quad-bike-roblox-bloxburg.pdfIn PDF document text
    • https://www.lavigny.ch/images/how-to-make-an-item-free-on-roblox.pdfIn PDF document text
    • http://bestmaids.co.uk/images/free-robux-hack-2021-no-survey.pdfIn PDF document text
    • http://nevesomost.by/images/free-robux-code-cards-website.pdfIn PDF document text
    • https://www.europap.cz/images/free-roblox-card-codes-july-2021.pdfIn PDF document text
    • http://elllanorestaurants.com/images/websites-to-hack-roblox-accounts.pdfIn PDF document text
    • http://stackideas.com/images/free-building-games-on-roblox.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-free-skin-robux.pdfIn PDF document text
    • http://pgk-polaniec.pl/images/how-to-get-free-packages-on-roblox-2021.pdfIn PDF document text
    • http://biccairo.com/images/medieval-hood-roblox-free.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-roblox-soldier-gfx-ww2.pdfIn PDF document text
    • http://energotestcontrol.ru/images/free-adidas-jacket-roblox.pdfIn PDF document text
    • https://luminouswisdom.org/images/free-roblox-cosmetics.pdfIn PDF document text
    • http://sealysports.com/images/free-roblox-gift-card-pin-codes.pdfIn PDF document text
    • http://a1scan3d.com/images/how-to-get-free-robux-no-hack-or-generator.pdfIn PDF document text
    • http://modlingua.com/images/how-to-get-free-robux-and-builders-club-2021.pdfIn PDF document text
    • http://evro-okna.net/images/best-roblox-exploits-free.pdfIn PDF document text
    • http://www.mediaxin.net/images/free-roblox-redeem-codes-generator.pdfIn PDF document text
    • http://www.sanjosedeminas.gob.ec/images/roblox-synapse-x-free-download.pdfIn PDF document text
    • https://www.u-pin-it.com/images/free-roblox-generator-2021-no-human-verification.pdfIn PDF document text
    • http://evro-okna.net/images/free-wings-on-roblox.pdfIn PDF document text
    • http://76remont-kvartir.ru/images/dungeon-quest-hacks-roblox-2021.pdfIn PDF document text
    • https://letturatarghe.it/images/how-to-have-no-pants-for-free-on-roblox-youtube.pdfIn PDF document text
    • https://lobergetart.se/images/free-robux-mobilecom.pdfIn PDF document text
    • https://www.eglihotel.gr/images/roblox-dayz-hack.pdfIn PDF document text
    • http://caraless.com/images/how-to-enter-a-cheats-code-in-roblox.pdfIn PDF document text
    • http://greasley.online/images/free-injector-roblox.pdfIn PDF document text
    • http://echosvoix.ch/images/free-robux-mods.pdfIn PDF document text
    • http://laboraltoledo.com/images/como-ser-hacker-en-roblox-2021.pdfIn PDF document text
    • http://www.actae.gr/images/only-you-little-mix-cheat-codes-roblox-id.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_off00037eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37EAF 19132 bytes
SHA-256: d4dd161379916c32c7013db241444b30798b159952e8ad7989756b3bdefd92ed
font_01_sfnt_off0003a646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A646 17872 bytes
SHA-256: e8d4c9d8774cf3c4408379fafefb0fb3f4286daa7b739c0c40c9888acf6c912e

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