Malicious PDF — malware analysis report

Static analysis result for SHA-256 4446235b12d15697…

MALICIOUS

PDF

48.2 KB Created: 2021-05-11 07:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2ab9104c12ab5dc19f1b38e3a1cc02c0 SHA-1: d07959918fdd738cc7203479e2b9fcf9be3e1e5a SHA-256: 4446235b12d15697c01c8ee6012f6fe8a1998dfc7f8bb0f6d1e86fffa145a2e7
102 Risk Score

Malware Insights

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

This PDF document was identified as malicious by an ML classifier and contains numerous external links, many of which are structured as a link farm. The document body and extracted URLs suggest a lure for downloading game hacks or cheats, such as 'spin-coin-game-hack' and 'coin-master-mod-apk'. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/spin-coin-game-hack
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/coin-master-mod-apk_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-march-2021_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/coin-master-ids-for-free-spins_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/haktuts-free-spins_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/hacking-apps-for-roblox_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/2021-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/free-coins-coin-master-blog_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/free-promo-codes-for-robux_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/roblox-hacked-accounts-list_GM431946152.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-no-human-verification_GM406889139.pdf
    • https://elearning.min12jkt.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb3.bin
3302ca4a4de6f62a680c83599396c923fc0d32a6390be610af4face2d6c79c45		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB3 24428 bytes
font_01_sfnt_off000084c8.bin
a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84C8 4028 bytes
font_02_sfnt_off00009268.bin
6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9268 2788 bytes
font_03_sfnt_off00009c57.bin
b56bff47aa771abc34fd6f7ab31864e8be47b484c749d0c581bff3c59f183b7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C57 17392 bytes

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