Malicious PDF — malware analysis report

Static analysis result for SHA-256 25118339596810f5…

MALICIOUS

PDF

33.9 KB Created: 2020-09-01 12:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b48577963faaeb91d3762202cfa8eb SHA-1: 724c3ba38b47daf5f20dc735528bc050208d507c SHA-256: 25118339596810f513292109505222924d0bb61dd67373341061898359b93e5b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains. One of the primary links, ttraff.ru, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the target URL and appears to be designed to trick users into clicking on these links, likely leading to further malicious content or exploits.

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/wix?keyword=hartford+connecticut+weather+report
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/35415437202.pdf
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/books_and_authors_2018_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/10791031536.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/2470500232.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/aerogenerador_savonius_casero.pdf
    • https://static.usrfiles.com/ugd/f0e51d_b1c83059b9df4b71af62c8763a22d35e.pdf
    • https://static.usrfiles.com/ugd/69695d_14a8906ac2984a76a4b8554641694cae.pdf
    • https://static.usrfiles.com/ugd/f1780b_dd6733742088446b8491dc94c7d707bd.pdf
    • https://static.usrfiles.com/ugd/73f3b0_6fbe368a383f4378931dee22b4c94233.pdf
    • https://static.usrfiles.com/ugd/dd4472_d7a0ef9de76548aba026a0902cb4e812.pdf
    • https://cdn.shopify.com/s/files/1/0435/4103/7208/files/temoxajazimijefoduz.pdf
    • https://cdn.shopify.com/s/files/1/0435/3094/4664/files/wijigidoxolawujofa.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/replace_multiple_value_python.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_off000048d7.bin
27239b2cb0f05a98b8795246c973e48bdf9d26764de9c394fc847172ccdbc995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48D7 5088 bytes
font_01_sfnt_off00005a30.bin
0791208863632579edb2afdef52cc20591d504ad1574730082591e3fd81e6c0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A30 9480 bytes

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