Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0b36214da27ebd…

MALICIOUS

PDF

35.1 KB Created: 2020-06-01 15:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d975f64ccfdccea2ab5feb850de6b1f SHA-1: 43259daf32aa6f3b7401c85ef1ed32df4ef1b813 SHA-256: 2d0b36214da27ebdc8bbe7dd475e8b0880846467af32945ed014ceb819ddac9a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains designed to appear as legitimate content sources. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. The document body, though heavily obfuscated, contains references to 'Introductory circuit analysis', suggesting a lure to attract victims. No scripts were extracted from this sample, limiting the analysis of direct payload delivery mechanisms.

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://mail.amfilms.com/uploads/1/3/0/8/130814173/130814173.html#introductory+circuit+analysis+boylestad
    • http://evakatebiz.com/uploads/1/3/1/3/131380505/07ca2.pdf
    • http://rycoley.com/uploads/1/3/0/4/130488382/8001172.pdf
    • http://readyaerospace.company/uploads/1/3/0/7/130776239/a4c45429071210a.pdf
    • http://kirkbates.com/uploads/1/3/0/2/130288456/d6f06fa3b4f73fa.pdf
    • http://1qb.undesirable.us/uploads/1/3/0/9/130969173/1542edfb.pdf
    • http://mail.amfilms.com/uploads/1/3/0/8/130814173/terms.html
    • http://mail.amfilms.com/uploads/1/3/0/8/130814173/dmca.html
    • http://mail.amfilms.com/uploads/1/3/0/8/130814173/policy.html
    • https://fagifidame.files.wordpress.com/2020/05/4881437611.pdf
    • https://wibuvevi.files.wordpress.com/2020/05/kapakavez.pdf
    • https://movomuwur.files.wordpress.com/2020/05/94894106727.pdf
    • https://panupobeguki443392900.files.wordpress.com/2020/05/jimiju.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_off00005e1f.bin
b42617a38a11f0e9a2b6101692be8a1dcfa1a78564925fa6f71ac8938af086be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 10192 bytes

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