Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fa0087867a4a29…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 22:45:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3ea688d66dd6c46438fefacd26c7255c SHA-1: c86016f132a7027aae49fb7c9e196ad0a4222384 SHA-256: 74fa0087867a4a298bcdd232c21f58ffb726089fcfe57506cf90cf2a6658c06d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document displays a fake CAPTCHA lure to entice users into clicking a link, which is a common social engineering tactic. The embedded URL points to a resource that likely serves as a downloader for a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-roblox-codes-game-hack PDF link annotation
    • http://baroque1990.com/images/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://baroque1990.com/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/www-robux-us_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://baroque1990.com/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://baroque1990.com/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://baroque1990.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://baroque1990.com/images/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://baroque1990.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://baroque1990.com/images/how-to-get-free-robux-fast-and-easy_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_off0000483b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x483B 24952 bytes
SHA-256: 8061422e7d03f662f35934627d93126a3ebcc79ee09f6dee8b0a42e05d69e4ac
font_01_sfnt_off00008146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8146 18124 bytes
SHA-256: b2c67196fbf991b5753887bae8f4e8d608d4d3a0c15e6a0a5d408089f8491e43

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