Malicious PDF — malware analysis report

Static analysis result for SHA-256 110204a42ddc3771…

MALICIOUS

PDF

32.5 KB Created: 2021-06-27 18:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5479f601f4a0671e9397ce7e6599a43c SHA-1: 83cbee072be0fbf81ee3c834da424334751eac90 SHA-256: 110204a42ddc377140f2e979be4e0f4b13a7b98d82dcc9f127209fbbfaa1e81f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are related to game cheats and currency generators for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure further supports a malicious intent. The document likely serves as a lure to direct users to malicious websites or download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-free-obc-generator-game-hack PDF link annotation
    • http://www.businessgalaxy.lk/files/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/tiktok-free-names_GM835599320.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/can-cheat-engine-get-you-banned-roblox_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/good-hack-scripts-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/roblox-free-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/roblox-whatever-floats-your-boat-hack_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/hacks-for-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/unlimited-robux-hack-pc_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/how-to-duplicate-coin-master-spin-hack_GM406889139.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_off00002a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4E 22068 bytes
SHA-256: c1db130e87edd4dc734408b65c150888766eec73e1441195b8aa2f1b26eb4fe4
font_01_sfnt_off00005b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B16 18752 bytes
SHA-256: dedd417ddd434e9efeb9815053e561ccfc46a681d256f5bfbcbd5c71df0b7dca

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