Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be2b1e669a492c6…

MALICIOUS

PDF

38.1 KB Created: 2020-08-21 18:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41d67e26f1edcba293147125f77b9482 SHA-1: 1b25505ec753d3d81549acdec1d18a66bafff9b4 SHA-256: 7be2b1e669a492c63ab7ac082c65cae28c263552630b6487bf47968d8e6b76f7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings. One of these links, 'https://ttraff.com/pify?keyword=blog+website+template+github', is identified as a malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a vehicle for hosting these links.

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/pify?keyword=blog+website+template+github
    • http://lutet.fencenola.com/uploads/1/3/1/4/131437308/384828.pdf
    • http://revoza.wateraerobichaircover.com/uploads/1/3/1/4/131438003/wukemubezewiw_rodenevuki_belujix_padavesijete.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5460/files/fetusidekinanugaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/59220766835.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40814320730.pdf
    • https://cdn.shopify.com/s/files/1/0432/3839/1970/files/86422824230.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/81542022549.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/putipaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/coreldraw_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/gaudeamus_hodie_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0439/7232/9630/files/menace_ii_society_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pamuzinesikajojefex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/sededunoxetonutikodolufe.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_off00005777.bin
d1cde944bb2fb54a653bef6746cd485cd5525597a9d0ba33cc838b80e9785fc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5777 5416 bytes
font_01_sfnt_off000069d0.bin
518290da625bd4cc660e737c4e0c1fca0cd4e62cab2c1def0f40f0eaaaf25857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D0 9968 bytes

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