Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c4822c28d8a178…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 08:24:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 639857a3a4bada5910f9e90054229eb0 SHA-1: bf29ec89fb2d3cb9b14c98874f8f41f749b2e437 SHA-256: e7c4822c28d8a178ac65d17ce37012b86b3af9610ed6efef8ff6f4975975f4ef
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to resources promising free in-game items or hacks for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a call-to-action button suggests a phishing or malware distribution attempt. The document likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-free-danlod-game-hack
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/mobi-hack-robux-hack_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/alone-battle-roytale-roblox-hacks-script-copy_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-right-away_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-gucci-shirt-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-exploit-on-roblox-without-cheat-engine_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/create-minecraft-server-free_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/get-more-robux_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/robux-adder-hack-download_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/when-was-minecraft-free_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/hawt-sauce-roblox-hack-download_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/galactic-adidas-shirt-roblox-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-free-items-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000310b.bin
cfb7e75380a818c1988396bf0fbf3725675ad6b4899e9c47f49c78d6ff9a5da1
pdf-font-stream PDF embedded font (sfnt) at offset 0x310B 22652 bytes
font_01_sfnt_off00006374.bin
4c4dd40d332ceda7ace5a649235bc96943684fbdeb934cca6d9d399eaab8264a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6374 18992 bytes