Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acc8c14c43e8681…

MALICIOUS

PDF

37.7 KB Created: 2020-08-29 20:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5712c02f11f44420dfa0e67ab34ddee6 SHA-1: 4248944a05a5ba1537f9bb64126bda98cb779dfd SHA-256: 2acc8c14c43e8681fa005f0e68dda8c17e6d01a739c28cb49872df2c6538dd70
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though partially garbled, includes the malicious URL and a password hint, suggesting a lure for a password-protected archive. This indicates a likely attack pattern involving social engineering to trick the user into downloading a malicious payload.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=rodolfo+halffter+tr%25C3%25AAs+epitafios+2
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/arangetram_tamil_movie_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/75938916840.pdf
    • https://cdn.shopify.com/s/files/1/0428/8089/3084/files/dawesatajitavafewoxuvuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/86256545354.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/97407447747.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0895/files/codingbat_answers_python.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/quimica_fisica_atkins_8va_edicion_pdf.pdf
    • https://static.usrfiles.com/ugd/724fb5_00406bf851a540059305a9520a0c541e.pdf
    • https://static.usrfiles.com/ugd/7ff653_f671420644e14a248ba7590185437315.pdf
    • https://static.usrfiles.com/ugd/b8c837_95c7f6ad57df4bddbf3a866824462b2a.pdf
    • https://static.usrfiles.com/ugd/b5aed9_9cd7fe9e6aeb400a81b63051b87855d5.pdf
    • https://static.usrfiles.com/ugd/3f0e57_87620ec8c6fc4e97ae4556c9455dba3c.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_off000053bc.bin
9f246b37f4d5f17695a2ca677930c54f60a37bf3fa540bf23559189b4ea87186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BC 5420 bytes
font_01_sfnt_off000065e5.bin
b00ba0568dae017465bf3c0ea32e605b1a74e56d66971444a14b557457b65c6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 10112 bytes

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