Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5e61ebcad5fb16…

MALICIOUS

PDF

35.7 KB Created: 2020-04-04 14:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3e9ecc266862a676370e1e7df6740c2e SHA-1: b33d8c4fe1a5041e536befd07d25fc528e7a40da SHA-256: 1e5e61ebcad5fb1623c076d7f5444b9072b7960b54c78759bb26fb87d6b18de5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 External Remote Services T1204 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to manipulate search engine results or distribute malicious content. The document body contains text related to a biology textbook, likely a lure to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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://agtco.net/uploads/1/3/0/7/130776493/130776493.html#pearson+miller+and+levine+biology+textbook
    • http://farmsteadandfolly.com/uploads/1/3/0/7/130739887/8823601.pdf
    • http://iamgood.ca/uploads/1/3/0/8/130813094/boduxap.pdf
    • http://masayahairdesign.com/uploads/1/3/0/7/130738754/1223041373ea15.pdf
    • http://spinstersguidetodating.com/uploads/1/3/0/4/130490488/3798635.pdf
    • http://katalaya.com/uploads/1/3/0/9/130969198/9914645.pdf
    • http://yousurecan.com/uploads/1/3/0/2/130270991/gubesakalapirala.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_off00006168.bin
f338d797bbb77cbe3d7614b5e5d5173bbc676f10e119ee157d61c5968d63efa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 8984 bytes

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