Malicious PDF — malware analysis report

Static analysis result for SHA-256 b198b0b0a7e5da17…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 00:09:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 392c87a7cf1e1c7e87feae7a3655e209 SHA-1: d2828e55142b7d66928ded66b4e04c100c269d98 SHA-256: b198b0b0a7e5da173b2e136f6748f30ed888c3e666fd3347e30a5605876d3ce9
102 Risk Score

Malware Insights

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

The document contains a fake CAPTCHA lure and embedded URLs, strongly suggesting a phishing or scam attempt. The primary URL, https://netcdn.xyz/app/1330123889/pubg-uc-17-game-hack, is likely intended to deliver a malicious payload or redirect to a fraudulent site. The presence of multiple related URLs reinforces the scamming nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/1330123889/pubg-uc-17-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/hack-spin-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-roblox-codes-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coinmaster-blogspot_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-free-download-android_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/robux-generator-com_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-codes_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-pocket-edition-hack_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/roblox-hacking-website_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/vip-roblox-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004905.bin
8726f61ce1d8c73e890cfe0c512f257f5c90923e147bb6a3c98af6bd121bd13b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 27800 bytes
font_01_sfnt_off00008742.bin
121efad188ac00459b1925c8c8271b05987e0953e90cb50c343848bdbe32b8b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8742 18060 bytes

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