Malicious PDF — malware analysis report

Static analysis result for SHA-256 92235a1ac066b111…

MALICIOUS

PDF

47.6 KB Created: 2021-05-12 09:37:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 27b28980a870aa212cc54923864a8c58 SHA-1: c8b87111c47194082cc54bbf2b13b3876cf97f00 SHA-256: 92235a1ac066b1110f09140b4b49cbee973efd1db195b1d4601bbea1ae9ce13f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a 'doc body' that explicitly advertises 'Free Robux' and game hacks, indicating a lure for potentially malicious content. The PDF_SEO_LINK_FARM heuristic confirms a large number of external links, suggesting a link farm designed to drive traffic to potentially malicious sites. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lures strongly suggest an attempt to redirect users to phishing or malware download pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/free-robux-with-no-verification-game-hack
    • https://sectorpravdy.com/images/how-to-get-free-robux-on-phone_GM431946152.pdf
    • https://sectorpravdy.com/images/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://sectorpravdy.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • https://sectorpravdy.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdf
    • https://sectorpravdy.com/images/online-coin-master-hack-here_GM406889139.pdf
    • https://sectorpravdy.com/images/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • https://sectorpravdy.com/images/free-robux-sites-that-work_GM431946152.pdf
    • https://sectorpravdy.com/images/coin-master-hack-ios-jailbreak_GM406889139.pdf
    • https://sectorpravdy.com/images/free-robux-no-verification-or-survey_GM431946152.pdf
    • https://sectorpravdy.com/images/roblox-redeem-codes-free_GM431946152.pdf
    • https://sectorpravdy.com/images/minecraft-free-no-download_GM479516143.pdf
    • https://sectorpravdy.com/images/coin-master-hack-without-verification-2021_GM406889139.pdf
    • https://sectorpravdy.com/images/minecraft-esp_GM479516143.pdf
    • https://sectorpravdy.com/images/best-minecraft-hacked-client-2021_GM479516143.pdf
    • https://sectorpravdy.com/images/can-i-get-robux-for-free_GM431946152.pdf
    • https://sectorpravdy.com/images/daily-free-spins-coin-master_GM406889139.pdf
    • https://sectorpravdy.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://sectorpravdy.com/images/robux-get-com_GM431946152.pdf
    • https://sectorpravdy.com/images/roblox-hack-codes_GM431946152.pdf
    • https://sectorpravdy.com/images/free-unlimited-robux_GM431946152.pdf
    • http://wolfzscripts
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aaa.bin
838fc0a97d2080d1961b03dc775c47632b583e92ddb1f27f8e4a68c72dd68e58
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAA 28892 bytes
font_01_sfnt_off00008bae.bin
c06b3113924030305e77bcf9fb59d6d068fb879dac89d836e8bedfcb0506a839
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAE 2936 bytes
font_02_sfnt_off000095d0.bin
882e97bebd076dae688415b0184bb224dca7d5b64082a0b27c077a0c76cfc979
pdf-font-stream PDF embedded font (sfnt) at offset 0x95D0 18964 bytes