Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8a0ee196f812e3…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 15:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9741e1c1564d8dfcf6663cd4cb51b9be SHA-1: d3dee6413a149fb92e522dae81113bec2397d6cc SHA-256: fa8a0ee196f812e3c969a3d289b980d26d2327fbc8738d1a301025156de83429
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt, a common lure to trick users into interacting with malicious content. It also contains numerous embedded URLs, one of which is directly linked to a potential exploit or malware download. The presence of these elements strongly suggests an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/how-o-hack-roblox-trackid-sp-006-game-hack
    • http://repository.ummy.ac.id//repository/free-robux-please_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/free-spins-coin-master-unlimited_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/robux-xyz_GM431946152.pdf
    • http://repository.ummy.ac.id/repository/cheat-roblox-pet-simulator_GM431946152.pdf
    • http://repository.ummy.ac.id/repository/no-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/robux-free-com_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/coin-master-cheats-for-free-spins_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/can-u-get-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://repository.ummy.ac.id/repository/cheat-teleportation-jailbreak-roblox_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://repository.ummy.ac.id/repository/easy-hack-method-roblox_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/wahoo-gaming-co-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/roblox-hack-me-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/robux-no-human-verification_GM431946152.pdf
    • http://repository.ummy.ac.id/repository/horizon-money-hack-may-2021-roblox_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/mc-update_GM479516143.pdf
    • http://repository.ummy.ac.id//repository/link-for-free-spins-on-coin-master_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005355.bin
a14e2032d59ae34fd23782415671031d131392b0cb7eb9da888b30876882253c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5355 25556 bytes
font_01_sfnt_off00008b4e.bin
e148e62c58b92a897538d9ec4faba7c4a53ed10bd3fbe703a1fbf1576664a203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4E 19188 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.