Malicious PDF — malware analysis report

Static analysis result for SHA-256 c410778694a67cbd…

MALICIOUS

PDF

34.1 KB Created: 2021-06-22 15:40:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d6397c6e3cc569d5ca88c3f64398d458 SHA-1: e4a9ac4e93b3320a8facce33e348e3e3098d1572 SHA-256: c410778694a67cbd5d7cb76fb1816f1cc84f96e9f23180f9da02cb4779264f3f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links related to free Robux and game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a call-to-action phrase further supports a malicious intent. The primary goal appears to be directing users to potentially malicious websites for financial gain or further compromise.

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.co/app/431946152/i-need-robux-for-free-game-hack
    • http://ghi.dk/billeder/how-to-get-free-robux-no-survey_GM431946152.pdf
    • http://ghi.dk/billeder/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdf
    • http://ghi.dk/billeder/free-roux-roblox_GM431946152.pdf
    • http://ghi.dk/billeder/free-robux-no-survey-or-email_GM431946152.pdf
    • http://ghi.dk/billeder/websites-that-give-free-robux_GM431946152.pdf
    • http://ghi.dk/billeder/free-roblox-youtube_GM431946152.pdf
    • http://ghi.dk/billeder/free-robux-gift-card-giveawa_GM431946152.pdf
    • http://ghi.dk/billeder/free-2021-roblox-accounts_GM431946152.pdf
    • http://ghi.dk/billeder/install-coin-master_GM406889139.pdf
    • http://ghi.dk/billeder/how-to-get-free-robux-games_GM431946152.pdf
    • http://ghi.dk/billeder/how-to-get-free-robux-2021_GM431946152.pdf
    • http://ghi.dk/billeder/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://ghi.dk/billeder/coin-master-free-coins-link-march-2021_GM406889139.pdf
    • http://ghi.dk/billeder/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://ghi.dk/billeder/bloxpage-free-robux_GM431946152.pdf
    • http://ghi.dk/billeder/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • http://ghi.dk/billeder/minecraft-education-edition-free_GM479516143.pdf
    • http://ghi.dk/billeder/coin-master-hacks-no-verification_GM406889139.pdf
    • http://ghi.dk/billeder/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://ghi.dk/billeder/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d03.bin
ffeba5a484995347237d72be5f769cc7bf3d849a19a1d9ba25036b65129c813e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D03 23016 bytes
font_01_sfnt_off000060c8.bin
9a93df1d3522f34b729d338625f64fd79a8c5bdf47104d5211a34369ad223a68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C8 18888 bytes

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