Malicious PDF — malware analysis report

Static analysis result for SHA-256 169fee2f95ef73c0…

MALICIOUS

PDF

34.4 KB Created: 2021-06-23 05:42:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dc1bd844a55f05541b1af014ad49cd24 SHA-1: 4dce311d18a56f2e481242ffc2e2127e7c2af551 SHA-256: 169fee2f95ef73c0b3473996d2b549e1b902619967f265ba8c5df4211be78a7a
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are part of a link farm designed to attract users searching for game cheats or free virtual currency. The document body explicitly mentions 'Free Robux No Human Verafaciton' and includes a primary URL pointing to a download for a 'game hack'. This indicates a social engineering attempt to trick users into downloading malicious or unwanted software.

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/free-robux-no-human-verafaciton-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-brighton-and-hove-buses-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-person_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/can-you-get-roblox-on-xbox-one-for-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hack-roblox-weight-lifting_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-apps-that-dont-use-adgates_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-offers_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_off00002e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4C 22392 bytes
SHA-256: 499bff9f96956cdfbfb4e61f0e0bdb8cd60dff54b06e2ced5e9312b8fe07dc2e
font_01_sfnt_off0000607a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 19336 bytes
SHA-256: 3d19d28dc5299902b891b3674149b1da3bd407def4376a6ed6d359f61ac1608d

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