Malicious PDF — malware analysis report

Static analysis result for SHA-256 745e77ec718b5974…

MALICIOUS

PDF

33.2 KB Created: 2021-06-26 08:43:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d76905545e58da3e2dca55917ac328d7 SHA-1: b818e679edb16290d11ecc18cb7d6dcd116e21c2 SHA-256: 745e77ec718b5974a498490f0ff152f7df81d79d539cd9dd7d63edec0f9bd1d7
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links and a document body that promotes 'free' game items and currency for popular games like Roblox. The heuristic findings indicate a link farm designed to direct users to external sites, likely for malicious downloads or scams. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is a lure for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-free-tycoon-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-item-codes-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/royalty-free-music-one-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/best-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/is-free-robux-generator-safe_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-free-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-real-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-coin-master-unlimited_GM406889139.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_off00002e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6B 21408 bytes
SHA-256: 1414ce00eeb27d5add4ab3d62355aa74b5ca3330a349a6016daf2c66be1e9156
font_01_sfnt_off00005d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3D 18828 bytes
SHA-256: ac6306e25c96f16c2242143064818da71f0a8d7ae88ddc61b361061dfd53932e

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