Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de3a5cc335af39c…

MALICIOUS

PDF

47.5 KB Created: 2020-08-30 08:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55acedc9cbcbf7d4da60536720f38208 SHA-1: b0ae1563bad96144f83fafd08b071356616ff586 SHA-256: 3de3a5cc335af39c44f2e2902853fbdcd6bda86bd2dfd79c0044ab6ed9fbace5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which points to a URL designed to deliver malware disguised as a printer driver download. The document body also contains the same URL, reinforcing the lure. The file also exhibits characteristics of a PDF SEO link farm, indicating a broader campaign to distribute malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/wix?keyword=hp+laserjet+1320+printer+driver+free
    • https://cdn.shopify.com/s/files/1/0452/5893/2381/files/celestial_navigation_terms.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/99015024652.pdf
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/zatiraluzala.pdf
    • https://static.usrfiles.com/ugd/0a052f_40dac93f70184b82839e1ad3fd8bdbc4.pdf
    • https://static.usrfiles.com/ugd/83f04e_fa58624ee78241e9ae61c40e8a7f6cc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9f61959076245ed9fa00c96a6d56967.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_1bb3bd3aa8a643faafedcb9dad80c23d.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a5f2dd4af0e47188c580170f612d5ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_643e42a017864535bb0a85344c5bae0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c575e52dff6f467181dd5c68f6159dc2.pdf
    • https://static.usrfiles.com/ugd/b8c837_886ca10cf65441fb80f9c714f90dc6f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb0899de63194060909ada918b713a7c.pdf
    • https://static.usrfiles.com/ugd/0f5b72_ecba0547bdfe4fe68a203e1015ef4f77.pdf
    • https://static.usrfiles.com/ugd/cd79e3_1cfe86d2883747bc83eefa3a6b052e78.pdf
    • https://static.usrfiles.com/ugd/162fe6_adf396ad009f4f4589900bf14abce8cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c63312f38c64bf080af884e03bedf1d.pdf
    • https://static.usrfiles.com/ugd/93c935_5f92b560a0154118929eed2d506e4107.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f9.bin
ddb13e5d12dcaa23c88fab3301efce38402767e3e378e1415d5ff26a06aaf1ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 5620 bytes
font_01_sfnt_off00008d31.bin
9d4c87ccf3e1c39a89bd86f0dcb4ae6692ce27858469eea539cec57c8f9405f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D31 10480 bytes

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