Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1a15ae542c0235…

MALICIOUS

PDF

41.0 KB Created: 2021-04-04 01:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9769d5e2875166b31a5c6dbc1e50e764 SHA-1: fefd527a0ec43a178ba83f1b32772a47780e456a SHA-256: 6c1a15ae542c0235c4961da1032b78664ecfc5b3347926ab116402caaceb0c4a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document presents a fake CAPTCHA and a call-to-action to trick users into clicking links related to 'free Robux'. The embedded URLs and the document's content strongly suggest a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and heuristics indicate potential for malicious actions, possibly involving JavaScript execution to facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9500

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-do-i-get-free-robux-on-roblox-2021 PDF link annotation
    • http://gops.pruszczgdanski.pl/images/gamingultracom-roblox-free-goup-generator.pdf%0AIn PDF document text
    • http://www.sapaengineering.kz/images/free-gametest1robloxcom-accounts.pdf%0AIn PDF document text
    • http://kids-academy.pl/images/free-robux-survey-for-robux.pdf%0AIn PDF document text
    • http://ff-obertraun.at/images/is-there-a-way-to-get-free-robux.pdf%0AIn PDF document text
    • http://jackson-pr.com/images/how-to-prevent-roblox-from-detecting-cheating.pdf%0AIn PDF document text
    • http://salantiskis.lt/images/hack-ser-inmortal-en-roblox.pdf%0AIn PDF document text
    • http://www.adravietnam.org/images/egg-farm-roblox-hack.pdf%0AIn PDF document text
    • https://www.u-pin-it.com/images/how-to-get-free-admin-in-roblox-games.pdf%0AIn PDF document text
    • https://www.coriglianocalabro.it/images/how-to-cheat-in-musical-chairs-roblox.pdf%0AIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-a-free-umbrella-in-camping-roblox.pdf%0AIn PDF document text
    • https://www.elevage-chiot.fr/images/10-weird-scary-hacker-storys-roblox.pdf%0AIn PDF document text
    • http://eltisstudio.sk/images/how-to-hack-another-player-on-roblox-not-working.pdf%0AIn PDF document text
    • http://www.anies.eu/images/get-free-robux-quiz.pdf%0AIn PDF document text
    • http://learningarabic.co.uk/images/fly-hacks-for-roblox-2021.pdf%0AIn PDF document text
    • http://legs11.co.za/images/roblox-gta-5-hack.pdf%0AIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-free-admin-hack-2021.pdf%0AIn PDF document text
    • https://technospektr.com.ua/images/loot-box-free-robux.pdf%0AIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-prison-life-hack-2021.pdf%0AIn PDF document text
    • http://www.torvet11.dk/images/videos-de-hacks-para-roblox.pdf%0AIn PDF document text
    • https://www.cpnf.ch/images/how-do-we-get-free-robux-on-roblox.pdf%0AIn PDF document text
    • http://www.hawler.in/images/free-level-8-exploit-roblox.pdf%0AIn PDF document text
    • https://www.ncscolour.no/images/earn-points-for-free-robux.pdf%0AIn PDF document text
    • http://www.htc.edu.au/images/doing-free-robux-games.pdf%0AIn PDF document text
    • https://www.porthos.it/images/how-to-hack-into-the-buildings-of-jailbreak-roblox.pdf%0AIn PDF document text
    • http://www.lycee-langevin-wallon.com/images/free-roblox-skins-stampylongnose.pdf%0AIn PDF document text
    • http://hemmet-strand.dk/images/pet-ranch-simulator-roblox-hach-cheat.pdf%0AIn PDF document text
    • https://bancroftandsons.com/images/roblox-hacks-phantom-forces-2021-regedit.pdf%0AIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/can-i-get-robux-for-free.pdf%0AIn PDF document text
    • https://www.dierenartsberghman.be/images/how-to-hack-old-rb-world-roblox.pdf%0AIn PDF document text
    • https://pa-waingapu.go.id/images/roblox-shinobi-story-cheats.pdf%0AIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004839.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4839 23268 bytes
SHA-256: eca688f316106a3141c4d6d5da26c4af0848ba8ce38328dc046188a561e32f23
font_01_sfnt_off00007cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC2 18320 bytes
SHA-256: 40a23a75e41069b77d0cbeecb2e134607ac40bf2107c39ba72e7f6a4a4dc16bf

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