Malicious PDF — malware analysis report

Static analysis result for SHA-256 0917eb23cc1549f8…

MALICIOUS

PDF

250.5 KB Created: 2021-07-06 08:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0c7913d1ea926d4226b8eab4e435dfc7 SHA-1: 4c6b9c24b40a8581e8d215bdae6d10fdc3c6c6fa SHA-256: 0917eb23cc1549f8ffbb4aca684fc41c3dc755dfefc3c8d6bb56fc60dc41e33a
140 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam and a fake CAPTCHA lure, aiming to deceive the user into interacting with a malicious link. The presence of a visual download button and urgency language further supports a phishing or social engineering attack. The embedded URL points to a suspicious domain associated with game hacks, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 7

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.tw/app/1330123889/pubg-uc-visa-card-game-hack
    • http://perpus.unpam.ac.id/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdf
    • http://perpus.unpam.ac.id/repository/real-hack-for-robux-inspect_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/roblox-moderators_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdf
    • http://perpus.unpam.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/how-to-make-robux_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/without-pokemon-go-free-promo-codes_GM1094591345.pdf
    • http://perpus.unpam.ac.id/repository/descargar-coin-master-hack_GM406889139.pdf
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-in-roblox-ios_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://perpus.unpam.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://perpus.unpam.ac.id/repository/get-free-robux-now_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/roblox-hacked-version_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/robuxhub-net_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/free-exploits-for-roblox_GM431946152.pdf
    • http://perpus.unpam.ac.id/repository/coin-master-spins_GM406889139.pdf
    • http://perpus.unpam.ac.id/repository/coin-master-map_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037cb1.bin
992e18e850dd389487a7dcbeed8c3a0c3b46ab42cdb2f91ef8882db953b00cf6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37CB1 26180 bytes
font_01_sfnt_off0003ba19.bin
874c23498c5f22c9a235d06550cf2e006a4d8071b117bd358f28952e5826f9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA19 18556 bytes

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