Malicious PDF — malware analysis report

Static analysis result for SHA-256 214d6d20c9e04edd…

MALICIOUS

PDF

46.0 KB Created: 2020-08-03 02:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 053ff0274c40fc59d23be049e38d8385 SHA-1: db4a620baabad6d4b3854617513369fc74af563c SHA-256: 214d6d20c9e04edd93b7d364c9374b02d8887111085e3a1ace1301635f840a16
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/wb?keyword=difference%20between%20absolute%20url%20and%20relative%20url%20pdf, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure through a deceptive link farm strategy.

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.ru/wb?keyword=difference%20between%20absolute%20url%20and%20relative%20url%20pdf
    • http://files.arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/7/130738803/a7285ae5444630.pdf
    • http://files.juniorbearbooks.com/uploads/1/3/1/3/131398091/sipajifi_bitid_juwuvixexu.pdf
    • http://files.maritzavives.com/uploads/1/3/2/8/132815346/zotowelew_lotavapibo_zevubebesoden_sodagufeje.pdf
    • http://files.rogerscitymarina.com/uploads/1/3/2/6/132681690/4073408.pdf
    • http://files.msreeddanceclass.com/uploads/1/3/2/6/132681985/9449317.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/wuvevolonigobidifuzidome.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7184/files/visepiselegivodofa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/rikabesevuwat.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/fatinonefetebekomazeka.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/1496208717.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/fegalisikidemurizawotoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/waperezorodobamajowas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/16206435104.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/97387359365.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/8306540533.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/dogatagugepeja.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/8629574718.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_off00007537.bin
43dc613af9d8f16906b01db30b6fcd0ab4beb76f15b256598711de13448f501f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7537 5440 bytes
font_01_sfnt_off000087df.bin
05dd7fbcc1daf52e00e22bf3806cf5e99885b4156debcf602054018d1d5e7798
pdf-font-stream PDF embedded font (sfnt) at offset 0x87DF 10104 bytes