Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be4ca8b5ab96d80…

MALICIOUS

PDF

34.6 KB Created: 2020-08-18 19:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b7717b79df33fc8de17aa06bb64874c SHA-1: 3d58c765dfaa736fa11bfbaf009566f1f09d6f6e SHA-256: 4be4ca8b5ab96d80e93973c6669a5614b899002711edea5bd48b1a95f322f689
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Virginia adoption petition form' and the malicious URL, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for malicious content.

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=virginia+adoption+petition+form
    • http://roger.nwgirlstock.org/uploads/1/3/0/7/130739783/3537249.pdf
    • http://jivefon.arizonacondemnationlawyers.com/uploads/1/3/1/3/131383483/336c0d.pdf
    • http://files.tacdlo.org/uploads/1/3/1/6/131637484/3718105.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/lg_g6_bloatware.pdf
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/job_application_format_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/jewikorinodisimuradifiza.pdf
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/validity_and_reliability_of_qualitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/tmux_kill_session.pdf
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/90055834134.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3630/files/12649657403.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_off00004a25.bin
8bad37ee71ce8fa1ed61256d6df953993346808f61b263e096558e9078461d85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A25 5116 bytes
font_01_sfnt_off00005b79.bin
be964282296a70c1cde7ba13d80c2f4fb507474414716ef1230274e2cedd7bfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B79 10140 bytes

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