Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa3c140faa1fceb…

MALICIOUS

PDF

35.7 KB Created: 2021-06-29 13:47:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3fa7e0e5f73f536dc4e36f59324dec9f SHA-1: aa85e66d2fb93c41fd966e4b2f4b89357730444c SHA-256: 4aa3c140faa1fceb76b25caffd7df813c84475945b718e87b5103d8267f9e6fe
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, likely designed to trick users into downloading potentially harmful software related to the game Roblox. The document contains a prominent call-to-action button and a large number of SEO-optimized links pointing to other PDF files, many of which also appear to be related to Roblox cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm or redirection scheme.

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/roblox-jump-hack-download-game-hack PDF link annotation
    • http://digilibfisip.uwks.ac.id/repository/dantdm-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-roblox-girl-clothes-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-build-a-boat-for-treasure-free-thrusters_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-400-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-no-survey-or-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-real-not-fake_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-generator-free-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-promo-codes-2021-december_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/what-are-some-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/unpatchable-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-roblox-hack-youtube_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-plus-ultra-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-samples-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hack-roblox-2021-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-welcome-to-bloxburg-money-hack_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_off000031f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F7 22448 bytes
SHA-256: 00eecdf9618de9390ebea649a3092f49b3e3f3b1795d3ae84fec5d96865c8f15
font_01_sfnt_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 19904 bytes
SHA-256: 9272e5a5ce55fd21ca8a59529ffa7db7b758f2c11c32ae894f6c540ddfdba02b

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