Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fa42e1740b592a…

MALICIOUS

PDF

37.4 KB Created: 2020-04-05 13:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 87c4dd078487e5bcf24f31c7c2b19a72 SHA-1: d21e98d0331a21d7038def28a3a874dc8eeecdb7 SHA-256: 20fa42e1740b592a617140f841f6d43179276468557ba8b8fe6e591fbed1779d
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This suggests a link farm or SEO spam tactic designed to drive traffic to these sites. The document body contains garbled text but includes a specific URL related to Cisco equipment, which may be a lure. The presence of numerous unknown reputation URLs indicates a high likelihood of malicious intent, possibly for hosting further malicious content or phishing pages.

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://offerup-item6192001.com/uploads/1/3/0/6/130621047/130621047.html#cisco+air-lap1131ag-e-k9+eol
    • http://medx-uk.com/uploads/1/3/0/5/130551477/gojokipirugapad_lopafipipotuki_bisegit_lafoxuv.pdf
    • http://treatsforlifefl.com/uploads/1/3/0/5/130551059/2538757.pdf
    • http://enhancedimagefl.com/uploads/1/3/0/3/130323172/313391.pdf
    • http://medatisltd.com/uploads/1/3/0/4/130488574/5772941.pdf
    • http://trilithonrecords.com/uploads/1/3/1/4/131408832/d998c6982a.pdf
    • http://mystudiosonline.com/uploads/1/3/0/7/130776616/xasuri.pdf
    • http://coloursofscotland.com/uploads/1/3/0/7/130776883/wesubi.pdf
    • http://xiaoleige.com/uploads/1/3/0/5/130588554/wixelisoki.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_off000068da.bin
315c822036cc043c92dae43c5bfab81a35947f4b4020ab8b9274c06b88108b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DA 8416 bytes

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