Malicious PDF — malware analysis report

Static analysis result for SHA-256 7964ff38fe7bc9ec…

MALICIOUS

PDF

246.3 KB Created: 2021-04-04 13:12:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1374f650bd28f748525a7ea69c15350a SHA-1: d81e59bd14bfd615cc658a3ecca7a3a541cf4e26 SHA-256: 7964ff38fe7bc9ecb2097f9209440c09cadca62791c96fe6e91378c6333c583c
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which are related to 'free Robux' or 'hacking Roblox accounts', indicating a phishing or scam attempt. The ClamAV detection and heuristic firings for external URIs and download button lures further support this. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest the document is designed to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.2292

Heuristics 5

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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-on-roblox-youtube
    • http://kermas.eu/images/free-robux-with-jus-tusername.pdf
    • http://kancelaria-legnica.eu/images/how-to-use-cheat-engine-64-on-roblox-for-robux.pdf
    • https://www.milewood.co.uk/images/free-btools-roblox.pdf
    • http://gvtssp.org/images/roblox-free-roblox-accounts.pdf
    • http://abletrustcare.com/images/how-to-get-loads-of-robux-for-free-2021.pdf
    • http://keepcasscountybeautiful.com/images/easy-hacking-engine-for-roblox.pdf
    • https://www.bmta.co.uk/images/how-to-hack-accounts-on-roblox-with-cmd.pdf
    • http://behsanroshd.com/images/roblox-play-free-no-sign-in.pdf
    • https://gafaseo.com/images/how-to-hack-roblox-2021-accounts.pdf
    • http://finalstand.org/images/free-robux-every-ten-seconds.pdf
    • http://arch-centr.ru/images/free-roblox-accounts-with-robux-2021-march.pdf
    • http://piadaandco.it/images/free-robux-no-survey-or-human-verification-2021.pdf
    • https://www.romedia.gr/images/how-to-get-free-robux-by-doing-nothing.pdf
    • https://beejekorf.nl/images/free-robux-hack-2021-lenovo.pdf
    • https://fkg.usu.ac.id/images/how-to-spawn-any-player-in-roblox-hack.pdf
    • http://www.inservis.cl/images/roblox-hacks-jail-breal.pdf
    • http://schrichte.de/images/the-roblox-hack-of-2021.pdf
    • http://www.hotelcimone.it/images/free-roblox-account-pasword-and-user.pdf
    • http://salantiskis.lt/images/roblox-phantom-forces-hack-dll.pdf
    • http://greenoase.be/images/hydra-roblox-free-robux.pdf
    • http://www.ntc.edu.za/images/how-to-create-a-shorts-roblox-free.pdf
    • http://bkd1.balikpapan.go.id/images/jailbreak-hack-roblox-download.pdf
    • https://www.olboys.it/images/roblox-avatar-free-skin.pdf
    • https://www.udivadlahotel.cz/images/roblox-robux-hack-cheat-engine-62.pdf
    • http://moto98.com/images/android-hack-roblox.pdf
    • https://lesegais.ru/images/free-epic-face-roblox.pdf
    • http://ghegamethu.vn/images/roblox-cheat-robux-free.pdf
    • http://kontaktadig.se/images/cheat-roblox-jailbreak-2021.pdf
    • https://liceucastrodelapenya.com/images/cheat-pour-phantom-force-roblox.pdf
    • https://www.fhccu.com/images/how-to-hack-cbro-roblox.pdf
    • http://behsanroshd.com/images/roblox-play-free-no-si
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000378e0.bin
edd780f975a4659a892ab7b4c21b1c3b6a1fe594821e560593d8fe9bb43728a6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x378E0 26116 bytes
font_01_sfnt_off0003b36b.bin
ee5bb307f1d89ef3bebe96d2ecf819554699965aeae0ea5a228b146f23cab744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B36B 17748 bytes

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