Malicious PDF — malware analysis report

Static analysis result for SHA-256 937b16064c2e1f64…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 19:34:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 918d0a6fc1de6daeb176956c700bf670 SHA-1: 6217a580c5050f6e14a364192cb6699d83960cdd SHA-256: 937b16064c2e1f64272f182fe7ae7baf360b819fdf9327062c25f6c74527118f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document contains numerous embedded links, many of which are SEO-optimized to appear as guides for obtaining free in-game currency or hacks for popular games. The primary external URL points to a site offering a 'coin master free spin and trading game hack'. The document's structure and content strongly suggest a phishing or scam attempt designed to lure users to malicious websites.

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.tw/app/406889139/coin-master-free-spin-and-trading-game-hack
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-download_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/aimbot-hack-roblox-comnand-promt_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-robux-without-survey-or-verification_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios-download_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-draw-roblox_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/facebook-coin-master-free-spins-link_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-new-link-free-spin_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/oprewards-robux_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/dj-khaled-for-free-roblox_GM431946152.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdf
    • https://elearning.man1sleman.sch.id/__statics/gudangsoal/files/easy-hack-1-step-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003258.bin
0df50b04d5941e27c3d87a0ecf90cc2e5dba506d90525d1404be907971ea809c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3258 22616 bytes
font_01_sfnt_off000064f1.bin
3321b442349ec3fbeffa6c99ea757bca325654330b1776a80a606c1f7099e679		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F1 18348 bytes

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