Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa502279d3a4dd5…

MALICIOUS

PDF

143.8 KB Created: 2020-08-27 16:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 874297096bb3d8897eedd594b5f7df34 SHA-1: f66d0015fa8a0fe85bbda82a3312958837d36a86 SHA-256: baa502279d3a4dd55627230e0ad4f0ea47fc0de81d1435f71fac08ebd0d4dba7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=history+of+medicine', is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure.

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=history+of+medicine
    • http://padurotut.incubator143.org/uploads/1/3/1/3/131379394/4068087.pdf
    • http://files.helenefagerberg.com/uploads/1/3/1/4/131453062/pezezivedinutil.pdf
    • http://newuzo.hanessiangroup.com/uploads/1/3/2/6/132683014/rorawopegujawutopad.pdf
    • http://pesenub.abesoutfitters.com/uploads/1/3/0/8/130874435/1330620.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/fiberom.pdf
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/english_parts_of_speech_worksheets_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/puvakudozanofezumomufexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/ile_d_oleron_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/autonomic_nervous_system_mcqs.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/battambang_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/vofopufuwakotetezagepud.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7709/files/22194679363.pdf
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/80966151658.pdf
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/bekanedijojobubesebe.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/38710224128.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_off0001f74e.bin
3722039918b61ee2988c2ea4ab89781a3b03e73a20b38643db74fb0739dd4bd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F74E 4988 bytes
font_01_sfnt_off0002082e.bin
777150f38ab64a7cee4e7155fa6fdcef18f1c34e1742c84c0cb6cd5d87ed804c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2082E 12664 bytes

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