Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6f1e935db55b99…

MALICIOUS

PDF

43.6 KB Created: 2020-08-09 04:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b1a912cf2409f8aa7f8fc8709548f9e SHA-1: b0988e4140901d8123954d97102c0510d9bb3198 SHA-256: cf6f1e935db55b99ac35f8913344f605b2d26811cf9456f53a3c3353b7d8395a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the string 'Sparx shoes catalogue 2020 pdf' which is also present in the redirector URL, suggesting a lure for phishing or malware distribution. The presence of numerous Shopify-hosted PDF links indicates a link farm designed to improve search engine ranking for 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.ru/pify?keyword=sparx+shoes+catalogue+2020+pdf
    • http://files.ayrenmartinphotography.com/uploads/1/3/1/8/131871648/vexululakopov_dejunetodege_fajigotofes_duvadadali.pdf
    • http://warebojuf.innerhavendecorating.com/uploads/1/3/2/6/132681352/fe5ab30a15f.pdf
    • http://files.cognoscereconsult.com/uploads/1/3/0/7/130739126/lexedasiwipe_kosop_murerumofe_jixirojofutali.pdf
    • http://bexotawo.aroundtheworldin800days.com/uploads/1/3/0/8/130814328/667896.pdf
    • http://files.francescaarnone.com/uploads/1/3/2/6/132681694/3b58d86290.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/kogavukoxoponu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/manedezesopiwebedugeko.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/netflix_apk_1._8_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/jiwelakubugoxusenexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/the_i_am_discourses.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/86050947158.pdf
    • https://cdn.shopify.com/s/files/1/0429/4498/7292/files/rockwell_band_saw.pdf
    • https://cdn.shopify.com/s/files/1/0435/8796/0989/files/least_squares_solution_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/73269298775.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/77336286950.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3655/files/sexogebi.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_off00006a91.bin
4d855638deef20569f350e7cbb8c03d03e20e81d6c7de4601b34f0b4c525b68a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A91 5860 bytes
font_01_sfnt_off00007e83.bin
a0dea0c467d775c4847bf97734389b512f5cbf608eb1c2c2540a69159ca1e39f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E83 10288 bytes

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