Malicious PDF — malware analysis report

Static analysis result for SHA-256 e804cd8bed98518e…

MALICIOUS

PDF

32.3 KB Created: 2020-08-31 03:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64ada71434999d398fefb600775b5621 SHA-1: b43da874f112e41132865b13145909a6b3f4a779 SHA-256: e804cd8bed98518e867061c1dafc97b5386af2b65081879e752a5d7016bf364b
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 a critical heuristic identifying it as a PDF link farm. One of these links, 'https://ttraff.com/wix?keyword=the+unstoppable+force+title', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to malicious infrastructure. The file was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or to host malicious links.

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.com/wix?keyword=the+unstoppable+force+title
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/national_vulnerability_database.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/74785670818.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/4775252016.pdf
    • https://cdn.shopify.com/s/files/1/0433/1021/9422/files/zixirujavuxijik.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/12025716729.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/louisiana_cities_by_population.pdf
    • https://static.usrfiles.com/ugd/b8c837_f09d60521aa945498fa562463d25a67d.pdf
    • https://static.usrfiles.com/ugd/2ca09c_67136282b0fe421fae1a3701c4b145b8.pdf
    • https://static.usrfiles.com/ugd/374ce0_0cfe81d70c73473b9d2b4fde2d965fcb.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/34877173851.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/56315699580.pdf
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/gemidunipowanog.pdf
    • https://cdn.shopify.com/s/files/1/0429/9168/1699/files/kiwor.pdf
    • https://cdn.shopify.com/s/files/1/0438/9250/6779/files/bootstrap_landing_page_template.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_off000041c1.bin
c162d16161773f54aa98aba91a51d572e260df26c784b810085508651c764161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41C1 5192 bytes
font_01_sfnt_off0000535b.bin
7545150e4048e40cea5de53c6b7c6d82f80d4af9f8f5d74d3ce7688f54111c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535B 9752 bytes

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