Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fa7034cdf9cd68…

MALICIOUS

PDF

34.4 KB Created: 2021-07-07 06:48:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a913142d745659db1fdbe5af11e129e SHA-1: be6c8be3c7f4242b99c751058221f0ef2fa1cb54 SHA-256: 74fa7034cdf9cd682ac84c9fcec17452642d8ce5c42f35a9149d0d8b7f06508a
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are presented as 'hacks' or 'free items' for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

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/431946152/hack-download-game-hack
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-pet-simulator-cheat-codes_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-tiktok-likes-generator_GM835599320.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-no-survury_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/royale-high-roblox-diamond-hack_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/speed-hack-script-roblox_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-toy-codes-roblox-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-play-online-free_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/best-free-minecraft-skins_GM479516143.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b4.bin
f21018cad1778cf01a131ae6a7b9a3cf7e6e20db05be39bb5435adaac7cfaef8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B4 21568 bytes
font_01_sfnt_off0000621e.bin
d78c77b4a5e62d10d25045934a8d44a0a1b22d5ea96fd27727cc2e9321cb16ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 18792 bytes

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