Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dcb9a9487128a8a…

MALICIOUS

PDF

36.0 KB Created: 2021-06-28 04:27:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1f08a9d5659bf430622aebe28425d2c0 SHA-1: 38d6aa122d006af908e6a1ea69c84944181e767b SHA-256: 6dcb9a9487128a8ad25354f7715600ea39bc494d4f176a296785bbb7720c027f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on domains related to game hacks and cheats. The ML classifier strongly indicates maliciousness, and the presence of a 'download button' heuristic suggests a lure to download potentially harmful content. The document body and embedded links indicate a phishing attempt disguised as a guide for game cheats.

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/how-to-put-anti-cheat-on-a-roblox-game-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/los-mejores-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-booga-booga-hack-script_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/case-clicker-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-catalog-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-simulator-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-obc-thumbnail-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-fur-roblox-dinosimolator_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-infinite-health-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-use-inspect-element-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/getrobux-info_GM431946152.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_off00003559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3559 22216 bytes
SHA-256: 9cb6c1ef9cc3de49c5d35f59e6ea6e1b66335a7afc1eccbb9c9eeb2d2372a5e9
font_01_sfnt_off00006687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6687 19596 bytes
SHA-256: 2c93c466204ce3c73542765ec7bae67753118134b8c27e66147660e31c8d7f42

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