Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76c6eb2fde15a07…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 04:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: aeaf5343d8aa3b7ee21602eda915b4cc SHA-1: adbfc146273b142682a012830c20e2512bda7ae1 SHA-256: e76c6eb2fde15a07676be7e8a01912f2931c48649a232fe195bfa0514beed37b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free Robux and game hacks, indicating a lure for users to download potentially malicious content. The heuristic findings confirm the presence of many external links and a ML classifier flagged the PDF as malicious. The document's structure and content suggest it is part of a phishing or scam campaign designed to trick users into visiting malicious sites.

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-100-robux-card-codes-2021-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/a-tab-that-can-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-valentines-generator-just-clicks_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hightlighter-player-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/afk-hacker-roblox-wds_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-things-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-robux-cheat-engine-61_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/go-to-robuxhackpro_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-generator-no-human-verification-or-surveys_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_off00002d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D81 22928 bytes
SHA-256: f5a25f6da8fb539fb6f9cd8d1c3dd5dc12d33c1ed2a49ff5a62c3b4a75992fc4
font_01_sfnt_off0000606e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606E 19292 bytes
SHA-256: c23d37ce7947c6523599bb8c36f07236e1d3851d04e79319df3b834af4087766

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