Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7efdcf8d1acb813…

MALICIOUS

PDF

50.2 KB Created: 2020-08-14 17:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44fc2df7dfbbd9d6268808fba8fc674b SHA-1: 3c768a64e86dac315b6189f90ce687a612369538 SHA-256: d7efdcf8d1acb813f6c7a22f69967c17b440da5afb38645fc92fe442e5306fd9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains text that appears to be a title for an academic report, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=british+journal+of+anesthesia+case+report
    • http://nokizojo.e-bookeditor.com/uploads/1/3/0/7/130738973/zojofavozilavajokiv.pdf
    • http://files.sharadslunchbox.com/uploads/1/3/1/3/131397973/tigib.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/catalan_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6967/files/makalah_asbabun_nuzul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7988/files/51153225301.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/54511067180.pdf
    • https://cdn.shopify.com/s/files/1/0435/5119/5299/files/87850624137.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/femevijukorexirep.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/13477405927.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/jugebiwopumutebaborewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/logical_operators_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0439/5496/2590/files/approaches_and_methods.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d97.bin
3378949338d03bc0fcd7ad43cbcdd478cd111207c7fd26d266ad7d363a4bbd18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 5228 bytes
font_01_sfnt_off00007f5b.bin
99a069921c956726fc7fe964f43aaac3dbba6678e7eaad2c8366e2f722a57050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5B 11952 bytes
font_02_sfnt_off0000a602.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA602 16204 bytes

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