Malicious PDF — malware analysis report

Static analysis result for SHA-256 4361307f8caa4c9e…

MALICIOUS

PDF

41.1 KB Created: 2020-08-05 01:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93246c2022a676aaf0e971a00ca41423 SHA-1: b1eca68651b01c54081872d9b33cb11e7953cb6d SHA-256: 4361307f8caa4c9ee2a08f3fdd0dcd0323235f50463cf49c15f1264c5f48b6d3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=first+encyclopedia+of+science+usborne+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The document also exhibits characteristics of a link farm, with numerous embedded URLs, further supporting the 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.com/pify?keyword=first+encyclopedia+of+science+usborne+pdf
    • http://files.erasor.org/uploads/1/3/1/4/131438073/7b41b4f798985f.pdf
    • http://files.trailsidecountrystore.com/uploads/1/3/1/3/131383973/d6074dd10d8c88e.pdf
    • http://files.bunkybambino.com/uploads/1/3/0/7/130775727/jimuvotoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/43447077634.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/lusenik.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/77467228546.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/mefasirigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/situmubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/62585298019.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/67827309113.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/28926707123.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/85301061835.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/86048857456.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_off00005cdf.bin
a56ba1f775241d53c146a89e892bf837a19ca5f2f887700b92eef102520d3212		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDF 5348 bytes
font_01_sfnt_off00006f26.bin
a2d0a8f71d359ed422cf7ff5a5048862d9a3aa29a77abf2aff99639f3189f377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 13868 bytes

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