Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb28151da6dceab…

MALICIOUS

PDF

73.3 KB Created: 2020-08-30 11:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03ef7cd6bbb5e1ecdd819c0a80a65f80 SHA-1: 201def7c39a738f336f1f628b260c5d3a3d72a9d SHA-256: 9fb28151da6dceaba0cd467c094daddf4f7b9fb6129b973fb56e3d982087e3dc
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=soundcloud+bible+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=soundcloud+bible+pdf
    • https://static.usrfiles.com/ugd/271e65_94057ab5f61a49c28db8171fab71d87f.pdf
    • https://static.usrfiles.com/ugd/6846fe_c6052da686f24c4da46af5674a143351.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fb24b56143f48fe9235d6d03ba7d6b2.pdf
    • https://static.usrfiles.com/ugd/3aee12_817c44b20c7c428a89e0f7504bba31c1.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/67387514475.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/kadozojabasumakepebuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/9518/5824/files/nugudurer.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/lowes_panama_city_florida.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/wasofu.pdf
    • https://cdn.shopify.com/s/files/1/0461/6948/9560/files/verse_chorus_form_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/24981702409.pdf
    • https://cdn.shopify.com/s/files/1/0440/1912/2341/files/wubixosemifetipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/branches_of_christianity_and_their_differences.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/irregular_adverbs_of_manner.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_off0000e35b.bin
0037ea86f6aee97ebbcbdcc78a233db2d0414381ee168c67d5531ae8e1ad6a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE35B 4908 bytes
font_01_sfnt_off0000f41d.bin
b2c6f181f7f9e36b3fb51238ecb2532414fb1c8f3523f4ebf2873aa6d7362970		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41D 10536 bytes

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