Malicious PDF — malware analysis report

Static analysis result for SHA-256 0985ee7c60b7d944…

MALICIOUS

PDF

35.5 KB Created: 2021-06-29 13:24:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83eaf6de371011ced4da10665aab8ea4 SHA-1: a1e978d8482c476a926b8f0579b18aac90fdfa1a SHA-256: 0985ee7c60b7d944b0dfe8458450f8a0581695089e0de4e6edade18251ab0088
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are structured as SEO-optimized links to resources related to game hacks and free in-game currency for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' heuristic suggests a deceptive user interface designed to encourage clicks on these links, likely leading to malware downloads or further phishing attempts.

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-roblox-logo-favor-bag-game-hack
    • http://library.imz.or.id/repository/minecraft-handbook_GM479516143.pdf
    • http://library.imz.or.id/repository/7aykw-duncan-free-robux-no-survey-human-verification_GM431946152.pdf
    • http://library.imz.or.id/repository/how-to-get-free-robux-2021-codes_GM431946152.pdf
    • http://library.imz.or.id/repository/roblox-hack-script-vehicle-simulator_GM431946152.pdf
    • http://library.imz.or.id/repository/free-robux-no-human-verification-generator_GM431946152.pdf
    • http://library.imz.or.id/repository/claim-your-free-roblox-card_GM431946152.pdf
    • http://library.imz.or.id/repository/can-i-play-roblox-for-free_GM431946152.pdf
    • http://library.imz.or.id/repository/descargar-hacks-para-roblox-2021_GM431946152.pdf
    • http://library.imz.or.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://library.imz.or.id/repository/roblox-gift-card-for-free_GM431946152.pdf
    • http://library.imz.or.id/repository/coin-master-hack-tool-for-pc_GM406889139.pdf
    • http://library.imz.or.id/repository/roblox-free-gift_GM431946152.pdf
    • http://library.imz.or.id/repository/pubg-uc-seller-pakistan_GM1330123889.pdf
    • http://library.imz.or.id/repository/robux-free-promo-codes_GM431946152.pdf
    • http://library.imz.or.id/repository/cheat-roblox-building-simulator_GM431946152.pdf
    • http://library.imz.or.id/repository/how-to-get-1-millon-robux-free_GM431946152.pdf
    • http://library.imz.or.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://library.imz.or.id/repository/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://library.imz.or.id/repository/change-username-roblox-free_GM431946152.pdf
    • http://library.imz.or.id/repository/roblox-muscle-simulator-cheat-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032de.bin
3a71ad080fb220801f2e40fbecbec6d904345e367f896cde58e3b02968e55c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32DE 23056 bytes
font_01_sfnt_off000066b0.bin
7313c16915e140e9d9ec5419c9068c79da60a83cdc5ff40da7800f7af426c61f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B0 18764 bytes

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