Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c606171ee857c03…

MALICIOUS

PDF

40.9 KB Created: 2020-07-28 03:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c6a3f41fbb1bf2b102980a991ec82d7 SHA-1: 72dcfb4100a1921b7cae7706b7e81173e6c361ff SHA-256: 4c606171ee857c03b0cc3ce6b557d222b2b49be2cc7a061e0cd2f31c6c1aa937
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to job search terms, suggesting a phishing lure. The presence of multiple external links, including a large number hosted on shopify.com, indicates a potential link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=guidewire+tester+jobs
    • http://files.valleyrootsfoodhub.com/uploads/1/3/0/7/130740344/fa8b50ce.pdf
    • http://files.glamserved.com/uploads/1/3/0/9/130969588/5242578.pdf
    • http://files.fancycanary.com/uploads/1/3/2/8/132815318/bowekakugi.pdf
    • http://files.twotownsonebook.org/uploads/1/3/0/8/130815228/5cb6702ec.pdf
    • http://files.cabinetsbywillowbrook.com/uploads/1/3/1/3/131383651/5975439.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/94134246450.pdf
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/voturezezunom.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/60362991259.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/gamifajoxoboruvelemipaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/zeluzezonexiwulepowubol.pdf
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/8491889347.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/tarazemonuzatijuliw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/50493255534.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/fatikoxorafapujow.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_off0000642c.bin
727bdb0a947ed2eb5184fcb5d6ac56df32ca15ca5c06ac4177b9e03545b0191d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 4692 bytes
font_01_sfnt_off00007446.bin
e326e5e1ed7f0c6c134b6f2e86fc85b4c68f0a6487bdf71fd9b0af4602a046d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 10096 bytes

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