Malicious PDF — malware analysis report

Static analysis result for SHA-256 92283ee51eb8e86e…

MALICIOUS

PDF

68.5 KB Created: 2020-08-12 20:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fe108890b71f56c4b0675f42dd667bd SHA-1: 64623b5fde3f821a1557ed2bd191f59c094d87e1 SHA-256: 92283ee51eb8e86e81b26028f54fa823a51bc0520b37b54db6d21fc7340b8325
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=isabel+allende+paula+pdf+gratis'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0429/9417/2058/files/junilejonuv.pdf'. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect the user to a harmful site.

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.ru/pify?keyword=isabel+allende+paula+pdf+gratis
    • http://sesonu.lakesareaminiatureherefords.com/uploads/1/3/1/0/131071021/6592864.pdf
    • http://files.mkwci.org/uploads/1/3/1/0/131071043/4139837.pdf
    • http://files.eygbball.com/uploads/1/3/1/6/131607467/b9d3217.pdf
    • http://files.bigbellceramics.com/uploads/1/3/2/8/132814086/6227204.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/junilejonuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/15774023779.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/bending_moment_diagram_for_frames.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/agenda_writing.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/kizetavuvojumafoxuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/getepopijus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/cracked_cylinder_head.pdf
    • https://cdn.shopify.com/s/files/1/0429/3872/8611/files/39477858937.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/31480389108.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/e2_80_9cvision_bundle_e2_80_9d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c121.bin
fd394ace665dc2050c5e978ac58fcdbccb7e153520fcdbcf3ca5ca7d4c73c3ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC121 5056 bytes
font_01_sfnt_off0000d249.bin
fbd588e8bdba655eef02a5669bba1cbf4ab342b156e1c9eb1594981e2273a65b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD249 10536 bytes
font_02_sfnt_off0000f672.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF672 4324 bytes

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