Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b43567eb728ab0…

MALICIOUS

PDF

46.4 KB Created: 2020-08-30 23:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d708412c1a6b4a282f896e2e9c05e84 SHA-1: 923aaacaa6e13a2c026040676f27bc0c9d2774a7 SHA-256: d9b43567eb728ab0318813a46f96e596ee52a654c81ebe6c29b0754adedd6385
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=zakhmi+dil+chupake+royenge+mp3+songs.pk+download', is designed to lure users to malicious infrastructure. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content.

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.cc/wix?keyword=zakhmi+dil+chupake+royenge+mp3+songs.pk+download
    • https://cdn.shopify.com/s/files/1/0461/7420/8163/files/akdam_bakdam_bambe_bo_song.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/samimegibufabutoboxib.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/siwute.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2653/files/kobuwuzunujivogomajabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/famijor.pdf
    • https://static.usrfiles.com/ugd/b8c837_77221a66c268461892ee2ec5bfdc527b.pdf
    • https://static.usrfiles.com/ugd/5de1df_82d027e4efae429a9f52ff59fe4a73ab.pdf
    • https://static.usrfiles.com/ugd/b444d4_01972aed999845449afc0cf8d5802914.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/1608393268.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/375914644.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/
    • https://static.usrfiles.com/ugd/b444d4_01972aed999845449afc0cf8d5802

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ab9.bin
921ec89ce082f9c21e46fa4bed6f0a93a5de80918ddc416b5b7a58e984507d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB9 5896 bytes
font_01_sfnt_off00006ebe.bin
77f03c61771cb384ab4b9c479c10fa0ef8ba852ddda97ad775741ec42d94a515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBE 14168 bytes
font_02_sfnt_off00009c82.bin
978b79dec265a16bcb61b0de4959f6fe268d2d43629a89ad8bdcc46bc51f6400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C82 4252 bytes

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