Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda47a1e8fae3fe6…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 15:59:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 959c3db6816b469b7dafec0b2e74c704 SHA-1: 9138e754bc9d1c5bc78f12bb8072f9d00a72b62e SHA-256: eda47a1e8fae3fe623b5bbdc3648da285f66507b594c34ca727746b128771728
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which are structured as a link farm, suggesting an attempt to direct users to malicious websites. The document body and extracted URLs indicate a lure related to game cheats and hacks, specifically for Roblox and Coin Master. The ML classifier also flagged this PDF as malicious with high confidence.

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/ideos-de-thanos-en-roblox-como-perfil-free-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/shirt-roblox-girl-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/dantdm-code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-exploit-free-no-viruses_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-report-a-hacker-that-hacked-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-accounts-password_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/tiktok-free-folowers-jio_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robot-animation-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-be-a-builder-club-on-roblox-free_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_off00002e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E23 21948 bytes
SHA-256: a482242e7c038800ae82c1cba45a1af703af514fd43b5f75efdfbaedfefb142b
font_01_sfnt_off00005ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC0 19692 bytes
SHA-256: 94464bb4fd068d412e7d497d4b2fa9504c745383ae4cc41acfa8263d16c0365d

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