Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cadb2aa309f2f6…

MALICIOUS

PDF

33.5 KB Created: 2021-06-28 07:24:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7b7121613f9a4b3d59f38106b50b550f SHA-1: d65afc72c4cdeeb403ea42a63c96229bc4ab74dc SHA-256: 08cadb2aa309f2f613a5a0d6ed82423cadfdff6844e15142d8d007246d9b7efa
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a download site, likely for a game cheat or hack. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing pretexts further supports a malicious intent. The document's content and embedded links suggest it is part of a phishing campaign to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 http://netcdn.co/app/431946152/free-robux-acces-code-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac/repository/roblox-retrieve-hacked-account_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-codes-on-xbox-one-for-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/final-stand-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-claimrbx_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-murder-mystery-cheats_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/are-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-wekk-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-builders-club-that-cost-1-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-a-lot-of-robux_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_off00002e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E10 21716 bytes
SHA-256: c6c2084c2cc2d9c7b6d9b9efafb0693f360808ea92b08dbcc3ba82cd644086ad
font_01_sfnt_off00005e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 18888 bytes
SHA-256: 33229621dcbd9d46909c17709fa0036e06b72f6f0d78e7c036c80033a25136b6

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