Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abd9746b9c7857d…

MALICIOUS

PDF

44.2 KB Created: 2021-05-15 06:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0df0c2ad0bc61d337be8e47b30b56c91 SHA-1: a43dae9facb1ac1dbc47b7a7669a1a47dc772843 SHA-256: 9abd9746b9c7857d7ba3fead838de8978768a57db9d1422c04f1e71aeb67075f
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to websites offering game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' heuristic suggests a deceptive user interface. The document likely serves as a lure to drive traffic to malicious sites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/406889139/coin-master-village-cost-game-hack
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-hack-cheat-generator-d_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-daily-free-link_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/websites-that-give-free-robux_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/robux-no-human-verification_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/wurst-mc_GM479516143.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/robux-generator-that-works_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-100-free-spins-link_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-robux-stream_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/give-me-robux-now_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-with-root_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-app_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/roblox-hack-site_GM431946152.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-apk_GM406889139.pdf
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/lucky-patcher-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bb1.bin
94ca0fce35900fbc0eb8b959eb53e740c7b1fdd240690cfbfa73b7991e6c6418		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB1 31320 bytes
font_01_sfnt_off00008b08.bin
a8028c0297769aa7dba6e0a54b0a1dc6e5838f70d2f821663f5d8e8c2692d7c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B08 18044 bytes

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