Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59f90645d88f2e2…

MALICIOUS

PDF

39.8 KB Created: 2020-09-04 21:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b76549e0006d2df49d4155dbe6975d76 SHA-1: 9d9147a0ee513ebb56a6eba039e1d0e27cec9c81 SHA-256: a59f90645d88f2e20e3d8106095d710ae82784c18b3bfda5a5024dacd1a8177b
128 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.me/wix?keyword=mandated+reporter+number+ca'. Additionally, it exhibits a PDF link farm pattern, with numerous links hosted on cdn.shopify.com, one of which is 'https://cdn.shopify.com/s/files/1/0435/1311/8872/files/92336600412.pdf'. The document body, though heavily obfuscated, contains fragments of urgency language and the malicious URL, reinforcing the lure tactic.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/wix?keyword=mandated+reporter+number+ca
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/92336600412.pdf
    • https://cdn.shopify.com/s/files/1/0428/2384/3996/files/95044779281.pdf
    • https://cdn.shopify.com/s/files/1/0462/7084/0981/files/kipufugakafisumebavumav.pdf
    • https://cdn.shopify.com/s/files/1/0434/8598/6982/files/jemozefo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/migiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7152/files/46113062393.pdf
    • https://cdn.shopify.com/s/files/1/0431/0817/1925/files/11071184493.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9100/files/vowiwememeloku.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/stevens_12_gauge_pump.pdf
    • https://static.usrfiles.com/ugd/917232_020eeadc00b34b4eb8e20eef44b698b1.pdf
    • https://static.usrfiles.com/ugd/d2751c_221cb67280c74b758f43120ddd6210c6.pdf
    • https://static.usrfiles.com/ugd/aef5b7_42499f2c71864a9085000b5df85fd258.pdf
    • https://static.usrfiles.com/ugd/eb4c03_dc678dce7aab43d89028d3d90cb8db1c.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_off00005ec8.bin
f8e4aa040a8ee35a3485a74166ee8d490af4770b178b12160abce02df8833533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC8 5152 bytes
font_01_sfnt_off0000703c.bin
a946f5d7de64c297f63161113cefce0c39ec348f420df77d8397edac58590f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703C 10016 bytes

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