Malicious PDF — malware analysis report

Static analysis result for SHA-256 be66b2125cbcaadd…

MALICIOUS

PDF

39.6 KB Created: 2020-08-31 16:38:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fba4e2d54d053291d504caddf7f04be SHA-1: 241f620b5a9ee25c4d8ee482afdaf311bd85f6b7 SHA-256: be66b2125cbcaadd593056db5705f0325bae08c9510c82a10521e27f23247921
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=messenger+dark+mode+android+not+working'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links, with the first identified as 'https://cdn.shopify.com/s/files/1/0452/5296/8605/files/182992563.pdf'. The document body, though partially corrupted, also contains the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=messenger+dark+mode+android+not+working
    • https://cdn.shopify.com/s/files/1/0452/5296/8605/files/182992563.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/34620254051.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/zikifemokanulanol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/wawemule.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/revue_technique_lancia_ypsilon.pdf
    • https://static.usrfiles.com/ugd/b65acf_8859e8f2c97d49d289dd645f6d579033.pdf
    • https://static.usrfiles.com/ugd/3aca14_fde81c1571cd43a7980760ebfdc52e1c.pdf
    • https://static.usrfiles.com/ugd/0511f5_a1dc567098604e1ca78700e4d8e75dde.pdf
    • https://static.usrfiles.com/ugd/b8c837_a15e2bb99a464cf48c44de4e05ca7842.pdf
    • https://static.usrfiles.com/ugd/c836c3_b69f4c55acb84d0981b63f99e4cd491d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5454b90080f4979982861724bee7770.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/84_charlie_mopic.pdf
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/alias_grace_novel.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/home_decor_business_plan.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_off00005d71.bin
7d5cb3c21796439911df88437426802fd2f4fd611a14c3bd93a07b32928c5bc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D71 5276 bytes
font_01_sfnt_off00006f6b.bin
569b0e0c623b552ca6617a2483dccb4bbf23b174e9ac668485cc000fb73bbaa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6B 10124 bytes

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