Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6bab007848154d…

MALICIOUS

PDF

37.7 KB Created: 2020-08-19 12:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea8063c3708c98f75e40668df9b26a8 SHA-1: 2e1bdcad51848ec10e692c72b96be4a02b2a03e2 SHA-256: 1c6bab007848154dc67404592d080e21fdc79e6429415db85c0ac143c6233c29
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the payload. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDF files, many hosted on shopify.com. The primary malicious URL identified is https://ttraff.com/pify?keyword=interim+report+format, which is likely part of a phishing or malware distribution scheme.

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/pify?keyword=interim+report+format
    • http://visanuju.marshalltownsend.com/uploads/1/3/1/6/131637376/4703203.pdf
    • http://files.creativeguitarstudio.co.uk/uploads/1/3/2/6/132695543/9658403.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/2818930821.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/bio_data_form_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/10259051397.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/gizegibogubosenixonowaka.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/16976849703.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3630/files/11342842419.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/fegikipapunonejegugaxevok.pdf
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/56054141022.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_off00005ba7.bin
21834fce499f0b894f2b99a0c486abb3549c7065838cdca56a2fa0fa7ae9807e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA7 4772 bytes
font_01_sfnt_off00006bc2.bin
5027fad5f038552a8a162d92cee86440a82391c04bf3fc9291309a73ac2f5372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 9140 bytes

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