Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a55c0c3bfd1807b…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 07:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7db9082decc417dc72e86170a4afc4b4 SHA-1: 6bd1a4ff38cf2fe25b96d63b7855882bf4abac56 SHA-256: 0a55c0c3bfd1807bccfa6e351bcdcefcd502ee802833ef826bb205cc6600848f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document displays a fake CAPTCHA lure, aiming to trick the user into interacting with it and subsequently downloading a file from the provided URL. The ML classifier strongly indicated maliciousness, and the presence of numerous URLs related to game hacks and free downloads supports a phishing or scamming intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://netcdn.co/app/431946152/roblox-free-download-ps3-game-hack PDF link annotation
    • http://behsanroshd.com/images/piano-keyboard-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/all-free-items-in-roblox_GM431946152.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_off00002e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2E 22232 bytes
SHA-256: 0561f2b660566c440a2fd06f850a7459a0e99251626ee95b645597162357116c
font_01_sfnt_off00005f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F38 19300 bytes
SHA-256: aace107d8450f56a09a9777c5bca8fc1e6875afc35d35d35c44c1fd350c953c4

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