Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcdadedd4c3ec367…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 08:04:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4e49ab2149c7443f4ab18840c489445f SHA-1: 12e48ab25bb12969a2a8d1a50dcd3bf84b9526f9 SHA-256: dcdadedd4c3ec36751378c0be40b096174329e695106c08a6747cfdab2b56507
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text referencing game hacks and cheats, strongly suggesting a lure to download malware. The ML classifier also flagged this PDF as malicious with high confidence. The presence of external URIs indicates an attempt to download a secondary payload.

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/dayz-roblox-hack-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-free-and-pokeball-plus_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-auto-clicker-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-any-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-shirts-roblox-happydaved_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/best-free-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-promo-codes-that-give-free-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_off00002fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22196 bytes
SHA-256: c48e2f1bd2134564dae0982d649f764eaf17650db44b85d9854b9075f14eb484
font_01_sfnt_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 19084 bytes
SHA-256: 2d284e400c39434e31f4727be66b615a49090eaba6d047275479039d1ee24ab3

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