Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4a9d4e238ce240…

MALICIOUS

PDF

50.6 KB Created: 2020-08-09 01:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d93912ea1170500b3cda8a55036c0cb SHA-1: e24fea7c56abb6e8389c218d4d2d5b9b1027b71a SHA-256: 3c4a9d4e238ce24018ef0ec45ffbeb655a8a6daff64e5032be01c8d4f36eb884
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, including one that redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'McKinsey case study examples pdf'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=mckinsey+case+study+examples+pdf, which is likely used to redirect the user to a further malicious destination. The file was generated by wkhtmltopdf, indicating it's likely a crafted document rather than a standard office file.

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=mckinsey+case+study+examples+pdf
    • http://files.uprisingstarsinc.org/uploads/1/3/1/3/131379045/gowofikur.pdf
    • http://files.consciousdivine.ca/uploads/1/3/1/3/131379759/46e62fb52b7eb.pdf
    • http://files.mcgrewhouse.org/uploads/1/3/0/8/130814856/7f50eae1.pdf
    • http://files.utopiatravelonline.com/uploads/1/3/1/0/131070476/regazegedabezilan.pdf
    • http://files.kylavender.com/uploads/1/3/2/7/132710676/1558531.pdf
    • https://cdn.shopify.com/s/files/1/0439/7396/8030/files/dafapebanijadobofuravaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/63837793582.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/20893310144.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/54426995021.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/40265763368.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/59540104452.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/5843942040.pdf
    • https://cdn.shopify.com/s/files/1/0435/3966/0954/files/metropolitan_opera_rush_tickets.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5190/files/xegitopujozafopisoveju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/jijigaguwagojogul.pdf
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/13974657852.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_off00007d2c.bin
29914515e8d4c8299643cef6afc4e5fae7d2a75a88e16345d677d3948e19743b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2C 5444 bytes
font_01_sfnt_off00008fc0.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC0 1800 bytes
font_02_sfnt_off0000984d.bin
9987674816660bab4af8fe571e9e0c2474996213ea8443f50753902880e08b05
pdf-font-stream PDF embedded font (sfnt) at offset 0x984D 10848 bytes