Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3874cc9fbaace6…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 05:06:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 265da6c0ecce73b421dfd4af0701e767 SHA-1: 53330e083fad4675193bee2a5dd5c40b8e659246 SHA-256: ea3874cc9fbaace6b4f116c0888ab772bc75adcda705b909c4be3a88396ee2ce
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as 'hacks' or 'cheats' for popular games like Roblox and Minecraft. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for such exploits. The presence of a 'download button' lure further supports the malicious intent of directing users to 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/cbro-roblox-hack-download-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/nopde-engine-64-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-download-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-cheats-no-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/mechanique-car-simulator-hack-free-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-images_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-easy-just-username-and-then-get-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-booga-booga-speed-hack-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-android-1-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-fun-hack_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_off00002d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D45 22924 bytes
SHA-256: 1c46ef90b526f0281b604d3ea544aaccd188881b38e0d1f0d3a68d4ce9c387fb
font_01_sfnt_off000060bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 19160 bytes
SHA-256: b7c98f9c90dd058da3c11d9cf3f47c9ec79520a0accaa2319f9b69966b8f2787

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