Malicious PDF — malware analysis report

Static analysis result for SHA-256 c045124f041eec7e…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 10:22:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 518dd69335b337cef6078a71b9518a6f SHA-1: f6f6b56a445e64145276cedc380ce544f72fba8a SHA-256: c045124f041eec7ef5ed3c7314b3fdaf4c4fb6cd2cd311debdee344adb1934d3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are structured as SEO-optimized links to other PDF files, suggesting a link farm or content-spinning operation. The primary URL points to a resource related to 'coin-master-fan-page-game-hack', and other embedded URLs are similarly themed around game hacks and cheats. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded links strongly indicate a malicious intent to redirect users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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 https://netcdn.xyz/app/406889139/coin-master-fan-page-game-hack
    • https://www.belgium-archery.be/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • https://www.belgium-archery.be/images/toolbox-for-minecraft-windows-10_GM479516143.pdf
    • https://www.belgium-archery.be/images/coin-master-hack-without-verification-code_GM406889139.pdf
    • https://www.belgium-archery.be/images/cm-free-spins_GM406889139.pdf
    • https://www.belgium-archery.be/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • https://www.belgium-archery.be/images/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://www.belgium-archery.be/images/download-coin-master-hack-apk_GM406889139.pdf
    • https://www.belgium-archery.be/images/free-spins-for-coin-master-hack_GM406889139.pdf
    • https://www.belgium-archery.be/images/roblox-download_GM431946152.pdf
    • https://www.belgium-archery.be/images/coin-master-free-spin-27_GM406889139.pdf
    • https://www.belgium-archery.be/images/blogspot-coin-master-free-spins_GM406889139.pdf
    • https://www.belgium-archery.be/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • https://www.belgium-archery.be/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
    • https://www.belgium-archery.be/images/free-coin-master-spins-for-today_GM406889139.pdf
    • https://www.belgium-archery.be/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdf
    • https://www.belgium-archery.be/images/free-robux-com-no-verification_GM431946152.pdf
    • https://www.belgium-archery.be/images/earn-free-robux-for-roblox_GM431946152.pdf
    • https://www.belgium-archery.be/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • https://www.belgium-archery.be/images/free-robux-generator-no-verification-2021_GM431946152.pdf
    • https://www.belgium-archery.be/images/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce7.bin
0a874aaa04ba672fa9988090b616cbd72fb41bd614e3fdf4cad98ade5072b4d1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE7 24548 bytes
font_01_sfnt_off000084eb.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EB 2840 bytes
font_02_sfnt_off00008e9c.bin
fbcfa89843e3076b9754f2e6f7e38431cf5550f9a922de7ec0814201ac83b7bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9C 18152 bytes

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