Malicious PDF — malware analysis report

Static analysis result for SHA-256 1477b47fdada5171…

MALICIOUS

PDF

250.6 KB Created: 2021-07-06 08:45:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dba7fd39731f5b44ff3b860dc486c474 SHA-1: a9f1407eb18583155f8302bb5e205f2872c9ad74 SHA-256: 1477b47fdada5171ddd4df347047dc0551039466fa4b833f3e08f7b27a51760b
140 Risk Score

Malware Insights

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

The document exhibits characteristics of an advance-fee scam, presenting a fake CAPTCHA and a download button lure to trick users into clicking a malicious URL. The presence of multiple URLs related to game hacks and free currency further supports this. Although no scripts were extracted, the document's structure and heuristics strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0099

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-center-game-hack
    • http://lib.stie-aub.ac.id/repository/hack-para-robux-gratis_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/ho-to-get-free-glowing-skirt-on-royale-high-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-robux-ad_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-do-you-hack-apocalypse-rising-in-roblox-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/www-robuxmaniac-free-robux_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-roblox-accounts-2021-may_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/robux-miner_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-any-free-catalog-item-in-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/minecraft-hacks-list_GM479516143.pdf
    • http://lib.stie-aub.ac.id/repository/easy-cheat-for-ultimate-driving-newark-roblox_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/comment-gagner-des-robux-sans-hack_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-in-roblox-games_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-cheat-in-roblox-moon-pet-simulator_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/claim-free-robux-button_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/free-download-roblox-for-windows-10_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/how-to-hack-accounts-on-roblox-on-ipad_GM431946152.pdf
    • http://lib.stie-aub.ac.id/repository/codes-how-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037e53.bin
d6054c7a566830e388e170f738d138ac8058a9c8bec9ec09fade7b2decbe8b6c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37E53 25928 bytes
font_01_sfnt_off0003bb68.bin
ee12e08750f0dd1bc449780da8824e767cd81ebdc1d4200573c534f038c2e73b
pdf-font-stream PDF embedded font (sfnt) at offset 0x3BB68 18232 bytes