Malicious PDF — malware analysis report

Static analysis result for SHA-256 69219d53c56710ab…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 08:21:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a41a7ab878a6a3fe8ca356a559195b58 SHA-1: abaa0d2e5599f78886f759a5c92900dcfb037a6f SHA-256: 69219d53c56710ab50ffd97e4b562899bd23f44572a289bd250568347711ba28
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms and offer lures for game-related cheats and currency. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an attempt to direct users to potentially malicious content or phishing sites. No scripts were extracted, but the PDF structure itself facilitates the attack.

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-catalog-roblox-no-fake-game-hack
    • http://library.itekes-bali.ac.id/repository/collect-free-spins-for-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-without-any-verification_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-2021-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-on-chromebook-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-hair-on-roblox-girl_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-back-hacked-roblox-account_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/cr7-test-roblox-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-gun-mod-download-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/packet-of-world-free-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-in-app-purchase-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hack-money-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-no-download-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-spins-apk-download_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/cheats-to-become-bear-on-bear-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003321.bin
e5e6aa4cf091b1de3146c740bd25e58062f33d187d15591f9b40cebd069b1366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3321 22204 bytes
font_01_sfnt_off00006448.bin
c39e7e4260aa58f0c01c6586372828ef691f23e8eee3515a35a7c51eaf8d3363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 18924 bytes

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