Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d26f6f2367fc05…

MALICIOUS

PDF

40.3 KB Created: 2020-08-16 18:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7523c5d770bd8c9f232788e1c1564d4a SHA-1: 3060847d8ca3b17e9659481ba46f85211d43acf4 SHA-256: c6d26f6f2367fc05b91302446c1f24f536b0208fe46bef4243cb8e7977edfa74
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one critical heuristic identifying it as a PDF link farm. The primary URL, 'https://ttraff.ru/pify?keyword=google+adwords+logo+vector', is flagged as a malicious redirector. The document body, though partially garbled, contains text related to 'Google adwords logo vector', suggesting a lure. The presence of numerous Shopify links, while many are confirmed benign, contributes to the overall link farm characteristic. The file's purpose appears to be directing users to malicious infrastructure through a deceptive link farm.

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=google+adwords+logo+vector
    • http://jotavas.mightyscripture.com/uploads/1/3/0/7/130775727/4598ae17ed0d6.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/72260238803.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2689/files/guia_lonely_planet_cuba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/buddha_teachings_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/adding_and_subtracting_decimals_lesson_plans.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/37255670124.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/33431081314.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/36284539859.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/nepewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/58299589391.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/91988784900.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_off000060b4.bin
beab45905c10ce72498f17ffdc67c7bb996c9bf647d206a50fc0ee8679fada62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B4 5288 bytes
font_01_sfnt_off000072dd.bin
a0461a11ab8225648b64753c8507ee1f5052710c2b9b4ac81a12f1d3a63171c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DD 10024 bytes

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