Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac5e9b5dcc4bba6…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 13:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 838370ef096e92dda736013b3e1f9337 SHA-1: a9b7cf726d38b2a9451e8fbb77ec2d6e352d3b1a SHA-256: 5ac5e9b5dcc4bba6324020a746cb0eb0b809bc5ff21df2c34fa935277de39c70
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and cheats. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. The document's primary function appears to be acting as a lure for malware distribution.

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.tw/app/479516143/minecraft-hack-mod-game-hack
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/hacks-for-minecraft-windows-10_GM479516143.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/hack-robux-no-human-verification-no-download_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/master-coin-hack-apk_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-robux-generator-for-kids_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/robux-com-free_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/roblox-snow-shoveling-simulator-lua-c-hack_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/https-webroblox-hack-groups-groupaspx-gid-2021239_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/paste-bin-robux-hack_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-hack-people-on-roblox_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-mighty-lion-card_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-get-free-robux-no-verify_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-get-free-robux-2021-nofake_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/minecraft-pe-free-ios_GM479516143.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/roblox-hacker-on-urbis_GM431946152.pdf
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coins-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033ef.bin
fba23065b7ab9be999e9c4911548c0a6c818da24599e30aa02306eedd0b689d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33EF 22488 bytes
font_01_sfnt_off00006613.bin
49e8d41e4645ecbcf6c8cca7b2812b927382294641a04bb93a79b652b6b1cc7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6613 18340 bytes

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