Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b9f69a52f24f409…

MALICIOUS

PDF

40.0 KB Created: 2020-08-15 10:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ec71ed4c345f30e0d3d98420be30db6 SHA-1: 25c6bc147e14231f332790ce2fc2effbe2c3ea9d SHA-256: 4b9f69a52f24f4099642022c1041fc1afe64520a4f3891f1eeef1bbe86520e36
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination. The document also contains a large number of links to PDF files hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The primary malicious link is https://ttraff.ru/wb?keyword=american%20girl%20books%20pdf, which is presented to the user as a search result.

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/wb?keyword=american%20girl%20books%20pdf
    • http://files.ambleon.net/uploads/1/3/1/0/131070125/zulalusimutolosu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/25114019414.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/valobefobitis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/bokojokutabikafi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/age_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/62230087320.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/duken.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/15638465930.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/32155720563.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/59501507478.pdf
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/59881612461.pdf
    • https://cdn.shopify.com/s/files/1/0428/9452/4579/files/78199884573.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/jujaxafoluvowefivofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.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_off00005de2.bin
6b2abac099332e1570ecedb5a2a6a0136b7bc7cf922eaae0635f2a754b34579c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 5668 bytes
font_01_sfnt_off00007101.bin
c39cfb450c7b9d330c5d6636f84ba96450101e2c0f94202f67bd9f6ef6ce485f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 10124 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.