Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6d2441f1f1bb05…

MALICIOUS

PDF

41.2 KB Created: 2020-08-28 14:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d5eb88ec2e32e3536b313250bd3f5b0 SHA-1: 897c1e7f57928fe2669df5160a5589e11eaf507b SHA-256: 1a6d2441f1f1bb0577d3919e67afd2c4908dd3f7e46b933e392fb554509c29c8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=da+2823+sworn+statement+example'. The document body also contains this URL, suggesting it is the primary lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely to obscure the malicious redirector. No scripts were extracted, and the document body itself is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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/pify?keyword=da+2823+sworn+statement+example
    • http://biponela.peacefulthoughtstherapy.com/uploads/1/3/2/8/132816036/volipakakazawewuwab.pdf
    • http://tikexiwa.georgiewoodeventing.com/uploads/1/3/1/6/131636725/konagugafudiluse.pdf
    • https://cdn.shopify.com/s/files/1/0463/2513/7563/files/foposepajazareronemaziwul.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/mopuziwebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3104/4007/files/kuferaxeludaxun.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/69470770027.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/rupozuzilubagozavowegu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9825/7048/files/20897237536.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/33086793710.pdf
    • https://cdn.shopify.com/s/files/1/0433/5960/0798/files/ano_ang_kahalagahan_ng_wika.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/facets_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/68723288978.pdf
    • https://cdn.shopify.com/s/files/1/0448/5467/3569/files/igcse_geography_map_skills_worksheets.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_off0000611d.bin
a975f1e53914e85d86bd739dbacd3da68f0448ce85c8d698eab2b6eade8cc350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 5612 bytes
font_01_sfnt_off00007429.bin
4eacc3c422177532743c3116cc50547c10cb235623a0d382949e7d95b8af6f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 11412 bytes

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