Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecbc3c34bfba544…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 10:12:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2c3b0d83b9567fd1b469fefbbb5db1f2 SHA-1: 7eb8fcb59c9644cdd3ec987c07ea2e6cab9717e9 SHA-256: 9ecbc3c34bfba54426d46638300b7b92e63a4c32a22dc5793ddfe210c63b2a01
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that lead to sites offering game-related cheats and hacks, such as 'minecraft-launcher-free-game-hack'. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and URL content point to a lure for downloading potentially unwanted or malicious software.

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.tw/app/479516143/minecraft-launcher-free-game-hack PDF link annotation
    • https://opac.heritagejkt.org//repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-tap_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-ban-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-robux-and-tix-download-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-comandos-para-free-admin-para-que-parezcas-un-virus_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/boku-no-roblox-remastered-money-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-more-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_off00002f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F29 22428 bytes
SHA-256: c50cd2a0df8345307391b413a8b5a165fa4221f2a8fd0e37a358846f45f1af01
font_01_sfnt_off00006060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 18164 bytes
SHA-256: 6217c2688e2cdd9b922ed2b0e9f3b2fc7a8795a9dac31b3127849cac571971e9

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