Malicious PDF — malware analysis report

Static analysis result for SHA-256 825230d41ff996e0…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 13:52:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 07e5c09118c37aeaf291b3e02e754b83 SHA-1: bf4944c99a0b3843ed5c084feb1fdded22482c34 SHA-256: 825230d41ff996e0bfe218b88a5272cc38a5478ebdd5e9f1170c9201710a1376
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to external websites, many of which are structured as a link farm for SEO purposes, suggesting a malicious intent to drive traffic to potentially harmful content. The document body and extracted URLs indicate a lure related to game hacking and obtaining free in-game currency, likely serving as a pretext to direct users to malicious sites or download malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/how-to-hack-coin-master-in-pc-game-hack
    • http://pustaka-smpn3tpi.com/repository/coin-master-latest-mod-apk-free-download_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-more-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-robux-easily-for-free_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-net_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-websites-that-work_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/wahoogaming-co-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/ios-coin-master-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/free-robux-generator-2021_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-400-spin-link_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/www-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-2021-ios_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-roblox-cards-pin-number_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/minecraft-pe-mod-menu_GM479516143.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f48.bin
18a464b1d2919dbdf61a7c40785630176620114d1e89ef1f9c16686c551554d6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F48 26372 bytes
font_01_sfnt_off00008bd8.bin
7b7faa2806f4651d8f2caf7de4c42b1705e796111e9b1cb5aed7a196d14508bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD8 18036 bytes