Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ab4b63a05a3cfd…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 22:45:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5ac3444564aee170f853d0e35cda5c50 SHA-1: fb2bfa67f1278588005b858c107e0d5f4b4ab963 SHA-256: e6ab4b63a05a3cfd71dc98bd0f33e7541482de283c6ec90600d2d1c5c273abba
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes game hacks and cheats, specifically for Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to download or access potentially harmful content via these links.

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.co/app/431946152/roblox-jailbreak-hack-download-free-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/field-of-battle-roblox-hacks-full-lua_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-how-to-get-free-gamepasses_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-download-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/the-laughing-unicorn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-roblox-big-brother_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-running-gamepass-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-hack-no-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7F 21968 bytes
SHA-256: 3a68efa3917ed7a3e629961b9923d77eb57f817135e9e930a76fb816c642b5ee
font_01_sfnt_off00005f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 19612 bytes
SHA-256: e5aaa09e4d7f2805aa71ad4be82b672f8098d4f9d67401bf559404a0b6c583d0

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