Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26685ed6cb0ca82…

MALICIOUS

PDF

48.7 KB Created: 2020-08-11 02:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0455e8578acfbd4203d667b84b9dbd1e SHA-1: a2a6ffcc194ebaa8307f6ea024235c5c4569a5a2 SHA-256: f26685ed6cb0ca824e67d84265ab82ab2d09f89e1517ec4fac9df77504999c3b
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely to appear legitimate. One critical heuristic firing indicates a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but includes the target URL, suggesting an attempt to disguise malicious content as a leadership styles PDF.

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/pify?keyword=leadership+and+leadership+styles+pdf
    • http://files.somethingsomethingtheatre.com/uploads/1/3/2/6/132695663/f00ffa2e44fae.pdf
    • http://files.agoodsoakbathandbody.com/uploads/1/3/0/9/130969403/b8090fd3a806b5c.pdf
    • http://files.fanatixwrestlingfederation.com/uploads/1/3/2/8/132814050/5074625.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/lapevowimekipuwadopufok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6013/2005/files/zanirososebexujefikutoj.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/58301039255.pdf
    • https://cdn.shopify.com/s/files/1/0448/1895/6448/files/winrar_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0433/7700/0611/files/aprender_italiano_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/mutorewoluxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/41825305341.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/78725528609.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pazobezosajage.pdf
    • https://cdn.shopify.com/s/files/1/0440/2328/3862/files/caesar_cipher_python.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_off00008145.bin
09404cec73c5abfd53ae49c86b81e63d3ad555857f813ce61cb441ce85b15e05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8145 5172 bytes
font_01_sfnt_off000092df.bin
b1b2e1056b53b48149bb22c01d872199a03923ad5502e6466e48ad940ede84cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92DF 10264 bytes

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