Malicious PDF — malware analysis report

Static analysis result for SHA-256 5949e65b1e0d444f…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 21:50:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 15e82735c5bb3666d428c3a877cdd896 SHA-1: c6e48bd753463eb49c1a0522a10e844940f07877 SHA-256: 5949e65b1e0d444f3f7872a7249e431b850fcd74dcc8093ef42ea3b699b8db1d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on domains related to game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a tactic to drive traffic to potentially malicious content. The presence of a download button lure further supports the intent to trick users into downloading files. No scripts were extracted from this sample.

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/roblox-comcom-game-hack
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-java-for-free_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-hacks-xbox_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-minecraft-maps_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-cheats-in-roblox-jailbreak-yt-2021_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/roblox-hack-cheat-buddy_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/toolbox-for-mcpe_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/roblox-admin-hack-code_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-without-root_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/cheat-roblox-dongeon-quest-installer_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/hack-mod-coin-master_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox-2021_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/hack-coin-master-for-free_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-instantly_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003220.bin
6c36e025e886c0f0f7af8a1471c1c86bd0379454f42f80bb840d0849ad8a391d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 23152 bytes
font_01_sfnt_off00006657.bin
78e21a6f7b26635aecbcc327ddb8855eecfad539c3b4b1802bdc788eaf0ee2ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6657 18748 bytes

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