Malicious PDF — malware analysis report

Static analysis result for SHA-256 4020ce7b20c4ddd7…

MALICIOUS

PDF

37.3 KB Created: 2020-04-12 07:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a3b812197621ef13c3a20d52e5ef47e0 SHA-1: 4fd49d8f60bbe096f1da4ee74399674dc52683a2 SHA-256: 4020ce7b20c4ddd7e3e2243efd1f44c49c5b5719dcd25498e698603c627cd2b3
92 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The document body contains a lure related to 'Dark Souls 2' and numerous external URLs, suggesting a phishing or SEO poisoning attack. The primary purpose appears to be redirecting users to potentially malicious content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://marikacleaningservice.com/uploads/1/3/0/4/130483799/130483799.html#dark+souls+2+como+usar+armas+duales
    • http://naturaprovita.com/uploads/1/3/1/1/131163620/cc2e70.pdf
    • http://bowsoverbros.com/uploads/1/3/0/3/130313274/fc4c2815bbf33e.pdf
    • http://belalee.com/uploads/1/3/1/4/131407086/zudesij.pdf
    • http://cds-ma.net/uploads/1/3/0/6/130621552/ef0484308570.pdf
    • http://yellowsharklogistics.com/uploads/1/3/0/6/130640094/banizuxeporaj.pdf
    • http://attheedgeoftheshield.ca/uploads/1/3/0/7/130775592/61cfcc964ce7ed.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006714.bin
12ff82b370a8751fd1250cce0264bdad3c934f08c1098a255a2a6ed41f6f6e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 9180 bytes

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