Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05ddeb5c27a244c…

MALICIOUS

PDF

53.0 KB Created: 2020-08-30 02:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c639e917c3a3d3ca5ca5bfd97b212d3 SHA-1: 6c0b00e08480120b81c358b25dbb934f5758591b SHA-256: b05ddeb5c27a244c70c9519e3d3c9417fab05be3802a2cd3e2d8191d1b0d626e
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded external links, characteristic of a link farm or SEO manipulation tactic. One of these links, https://ttraff.cc/wix?keyword=the+ultimate+guide+to+gi+joe, is a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not intended for direct user consumption but rather as a vehicle for link distribution.

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/wix?keyword=the+ultimate+guide+to+gi+joe
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/spreadsheet_for_sole_trader.pdf
    • https://cdn.shopify.com/s/files/1/0441/0910/3256/files/filupatiwilaxibagolojexa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/allahabad_bank_application_form.pdf
    • https://static.usrfiles.com/ugd/9c43ec_4a675df99fa44a1baa00ce8529e1036b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f309e07050e64ca5be621a630ff9834f.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_2c0db41f2c1e4639b47d56e6ca1af44c.pdf
    • https://static.usrfiles.com/ugd/d775a9_7273fdeec25b4b0e9a51cff113ce4302.pdf
    • https://static.usrfiles.com/ugd/122077_414116daa651453296e5f531ad96a3f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_179209e83ce24ee09f428c79ba82157d.pdf
    • https://static.usrfiles.com/ugd/4f270c_77f7268fc2834bc99ba92702b4df01a7.pdf
    • https://static.usrfiles.com/ugd/ea2f88_e94d4e06509b4129975851bc1a426a0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cfa656bb47247d894b66cbc9449a514.pdf
    • https://cdn.shopify.com/s/files/1/0440/1748/3934/files/mufapuwabufakevumex.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/kubota_zd323_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/causative_upper_intermediate_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0438/6045/9685/files/centre_parcs_sherwood_forest_map.pdf
    • https://cdn.shopify.com/s/files/1/0465/1584/7326/files/bnf_77_free.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_off00009464.bin
bf964485456ff5425023cafc07be8fc093344562c0c3b6279dd2e90fea1761c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9464 4988 bytes
font_01_sfnt_off0000a53b.bin
dc22bfb830ad5be0e07ab3b448da32619005af37f7f32cc032e34ba5c38b3b03
pdf-font-stream PDF embedded font (sfnt) at offset 0xA53B 10196 bytes