Malicious PDF — malware analysis report

Static analysis result for SHA-256 5458ae9b345a0064…

MALICIOUS

PDF

30.2 KB Created: 2020-04-09 02:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4625fb579ce3133da650a2dd2bab3211 SHA-1: a19331aec62326dbce04dcda7ad1ec3900b043a8 SHA-256: 5458ae9b345a0064416929f9d177942b5650360e82bffbb5a6738c42e466e3d0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file contains numerous external links to various domains, identified by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files, suggesting a coordinated effort to create a link farm or distribute malicious content. The presence of these links indicates a likely phishing or SEO manipulation attack pattern. No scripts were extracted from this sample.

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://clouddreamlashes.com/uploads/1/3/0/3/130379063/130379063.html#stu+emmert+chevy+liberal+ks
    • http://kingsandcowboys.com/uploads/1/3/0/7/130739039/8468129.pdf
    • http://gabrijoystudios.org/uploads/1/3/0/5/130545334/5954279.pdf
    • http://gobeyondthepond.com/uploads/1/3/0/8/130873708/dubuxirezenikabug.pdf
    • http://homeschoolsocial.org/uploads/1/3/0/5/130546294/sizubamajaxi.pdf
    • http://twilightjazzband.com/uploads/1/3/0/6/130621197/nozito_xotifet_sedozojid.pdf
    • http://happyherbivorelife.com/uploads/1/3/0/7/130776008/6322141.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_off00004dad.bin
9a7e5ee714cbeaa344356f17891f6bf62c092a84ce8fd198548ea71466796bc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAD 7872 bytes

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