Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d26e0945679f545…

MALICIOUS

PDF

43.7 KB Created: 2020-08-15 03:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81bec42b8658ad8a553a6c9358103278 SHA-1: efb7390da0f187296a47eb2984491fe534f8d308 SHA-256: 3d26e0945679f545151b45b6564b1b95e7d5e5ef7d619d22f2cd31dafaf159a2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for educational content. No scripts were extracted, but the presence of the malicious redirector and the link farm heuristic strongly indicate a phishing or redirection attack.

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=guided+reading+lesson+plan+template+kindergarten
    • http://medelalan.johnwilliamscounseling.com/uploads/1/3/0/8/130814124/f6dd4288.pdf
    • https://cdn.shopify.com/s/files/1/0438/3444/1885/files/political_science_an_introduction_roskin.pdf
    • https://cdn.shopify.com/s/files/1/0436/5844/4958/files/angular_4_tutorial_point_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/womal.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/42511441273.pdf
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/multifactor_leadership_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5920/files/fananumikanipexumaji.pdf
    • https://cdn.shopify.com/s/files/1/0429/5409/6806/files/61342224410.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30551251375.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/php_xml_to_array.pdf
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/munupenakesepibapanuwamu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c91.bin
dd83ea544541c6c4231653d8ad3ff49a663b16f75d6765869e7386a487aaf6d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C91 5372 bytes
font_01_sfnt_off00006eba.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBA 6148 bytes
font_02_sfnt_off00007e9a.bin
d85638284e69e8c6e7901fb4af555a9c783b6e88161189717eaa047f6dbb80b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9A 10288 bytes

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