Malicious PDF — malware analysis report

Static analysis result for SHA-256 3369cc0c67552717…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 20:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac6d2eb0d9911c32000fafde9902b072 SHA-1: a9e0d03b04ffcdb8a8daaa94438b5c0f5a726d79 SHA-256: 3369cc0c67552717fd153b755baea8109652de2ea971c3d44913d9efaae96e50
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body contains text related to a movie and the redirector URL also includes movie-related keywords, suggesting a lure. The primary malicious URL identified is https://ttraff.com/pify?keyword=dushmani+movie++mithun, which is likely used to redirect users to a malicious site.

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=dushmani+movie++mithun
    • http://files.huwhatwear.com/uploads/1/3/0/8/130873708/3c578.pdf
    • http://files.bopressphoto.com/uploads/1/3/1/8/131856492/pomefapumefowupilad.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/balancing_equations_practice_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/wufefitogisaluwizoto.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/81153658573.pdf
    • https://cdn.shopify.com/s/files/1/0430/8326/8257/files/32904069959.pdf
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/setavo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/fadojomageka.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/discrete_probability_distribution_examples_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/93223294338.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9670/files/56046136558.pdf
    • https://cdn.shopify.com/s/files/1/0428/8472/6943/files/43501248983.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ba7.bin
b61233f10d77b47de702910e12e5271e55011929b1578be718ed5ee5d9681b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA7 4740 bytes
font_01_sfnt_off00005b9f.bin
366318830a0e732aea455ec1ce62a6bf03c6c3c2901a30d4b0af2f38d2fa9c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9F 9864 bytes
font_02_sfnt_off00007d90.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 16164 bytes
font_03_sfnt_off000092a7.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A7 4324 bytes

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