Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63faeb42068fd05…

MALICIOUS

PDF

43.9 KB Created: 2021-06-02 14:29:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bec824ed8ad38b8b40836f5e295eb393 SHA-1: 1b55a4d47842bf00045d425b9edc743b15e70753 SHA-256: e63faeb42068fd05a23791b37f58f68d0161cd20879ba18cac7701bd98648d33
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links pointing to SEO spam pages, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to game-related terms and URLs, suggesting a lure for users interested in free in-game items. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-games-that-have-free-boomboxes-game-hack PDF link annotation
    • https://cluster-consulting.com/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/pokemon-go-fest-free-tickets_GM1094591345.pdfIn PDF document text
    • https://cluster-consulting.com/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-data-breach_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/give-me-free-robux_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_off00005040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5040 24088 bytes
SHA-256: 250fdf9ec8a3e02fe094e06fca1b35339720195815e1630388f28e9af6d202b9
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 18820 bytes
SHA-256: 3642a5c7ec36a2377e7146f8014dad7697d9da83cfb0145269fb9f85dc103c2f

Open this report in the interactive analyzer, or submit your own file for analysis.