Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69b6c8283a5a283…

MALICIOUS

PDF

47.8 KB Created: 2021-05-14 02:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 13471df43aa6624a64cf1d2ae8588104 SHA-1: aa0048fcf6a9ee4923601adb1ae9d16c96b2ec76 SHA-256: b69b6c8283a5a2838154c3d001b00cef6a505a4d5452af009766418d3b2e4938
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent link in the document body, all related to game cheats and free in-game currency. The heuristic firings indicate this is a link farm designed to direct users to external sites. The ML classifier also flagged this PDF as malicious, suggesting a high probability of malicious intent behind these links, likely leading to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/how-to-get-free-robux-instantly-game-hack
    • http://www.pbconsulting.it/images/coin-master-daily-free-spins-link-download_GM406889139.pdf
    • http://www.pbconsulting.it/images/how-to-get-a-lot-of-robux_GM431946152.pdf
    • http://www.pbconsulting.it/images/coin-master-spin-link-today_GM406889139.pdf
    • http://www.pbconsulting.it/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdf
    • http://www.pbconsulting.it/images/robux-now_GM431946152.pdf
    • http://www.pbconsulting.it/images/roblox-redeem-codes-free_GM431946152.pdf
    • http://www.pbconsulting.it/images/roblox-hack-client_GM431946152.pdf
    • http://www.pbconsulting.it/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://www.pbconsulting.it/images/coin-master-free-spin-and-trading_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://www.pbconsulting.it/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://www.pbconsulting.it/images/coin-master-hack-trick-2021_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-hack-for-ios_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-free-spin-game_GM406889139.pdf
    • http://www.pbconsulting.it/images/play-roblox-for-free-on-google_GM431946152.pdf
    • http://www.pbconsulting.it/images/how-to-get-free-minecraft-coins_GM479516143.pdf
    • http://www.pbconsulting.it/images/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-hack-tool-without-verification_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-free-spain_GM406889139.pdf
    • http://www.pbconsulting.it/images/coin-master-free-coins-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ad.bin
4ee6bf9e3fe76f72e211732a90ad1536d286659f230d30d746927e1657b2560f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AD 28940 bytes
font_01_sfnt_off000089f7.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
pdf-font-stream PDF embedded font (sfnt) at offset 0x89F7 5696 bytes
font_02_sfnt_off00009709.bin
19eb0a1aeef998e7db468722215b94b9b4bc3d0fba007f3cca2c49ee7cc94cee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 18764 bytes