Malicious PDF — malware analysis report

Static analysis result for SHA-256 329961d005bc7caf…

MALICIOUS

PDF

34.0 KB Created: 2021-06-22 21:06:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0ae4dc1184ea717133622e0259a8b607 SHA-1: 9afc55f8701ca0893c5e55a7025ddd3085749f2f SHA-256: 329961d005bc7cafed02d3a7a72f594b0653f077c4940c96da104a72c5e0a0f3
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacks and cheats, suggesting a lure for users to download malicious applications or visit phishing sites. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-optimized PDF links further supports a malicious intent to drive traffic to potentially harmful content. No scripts were extracted from this sample.

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-app-roblox-game-hack PDF link annotation
    • http://www.compusiteinc.com/images/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-generator-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-items-roblox-meepcity_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cheats-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cheats-to-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/a-website-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/black-wings-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/infinite-essence-roblox-booga-booga-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-hack-no-games_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E64 22916 bytes
SHA-256: 5e96e3606cdf9d484b5856a8e30401ba9cd015efa60ef239ba3b4833243ba61c
font_01_sfnt_off0000607f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607F 18824 bytes
SHA-256: f19bbf2a4ee5aeca2843906f754efe05e78dae6c4dfded6776fe880ff358eb78

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