Malicious PDF — malware analysis report

Static analysis result for SHA-256 3131c78f48019f70…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 09:13:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a65bc097d7b49fd9322074238f8e4fed SHA-1: cc7e04fd630ef8593a6def934e4f73f138577947 SHA-256: 3131c78f48019f7016291529834a266555d13a82e0052e62ce4811f8feaa65b9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, pointing to websites offering game-related cheats and currency. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests the document is designed to redirect users to potentially harmful content. The document body, though heavily corrupted, contains a title related to a hacked Minecraft account and includes URLs, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/my-minecraft-account-was-hacked-game-hack PDF link annotation
    • http://sealysports.com/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://sealysports.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sealysports.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://sealysports.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://sealysports.com/images/juego-hackeado-de-coin-master_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_off00004a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A33 25388 bytes
SHA-256: c2cced0cfa61ff4a18c411876c4f44288cfa80c406957c445e8778a909468507
font_01_sfnt_off0000822c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822C 18572 bytes
SHA-256: 8fcc029f3058febc4000d5efca0362144e4b81fd53f2a26dc97808c5095a664d

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