Malicious PDF — malware analysis report

Static analysis result for SHA-256 97253a6a74990ea6…

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 06:23:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 734123465385c1627467a9a989819903 SHA-1: eb55a544e02fedfab305dc2dd822c69e5bc67441 SHA-256: 97253a6a74990ea6db31f74b7fa423665f5848c57f0d2383e5125f4790de53b6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which are presented as game hacks or free accounts, indicating a lure to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious workflow. No scripts were extracted, but the document's structure and embedded URLs suggest it is designed to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-programers-game-hack
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-game-hack-apk_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-spin-and-daily-news-coin-master_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/rich-free-roblox-accounts_GM431946152.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/master-coin-hack-apk_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-link-2021_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coinmasterfreespins_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-roblox-gift-card-codes_GM431946152.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/minecraft-free-play-no-download_GM479516143.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/minecraft-java-for-free_GM479516143.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/can-i-play-minecraft-for-free_GM479516143.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-rewards-robux_GM431946152.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/rbx-hut_GM431946152.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-8_GM406889139.pdf
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a23.bin
2c354b95484cb3c18d92271a3e24965221174156176d8c05d02e03753139019a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A23 24276 bytes
font_01_sfnt_off00008189.bin
9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8189 18416 bytes

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