Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5448ecbdad1e366…

MALICIOUS

PDF

55.5 KB Created: 2020-03-23 12:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 70423e76a65f2e3b713b351d3679961a SHA-1: c18f49e645592c0178256c35f8ef0fa261665420 SHA-256: d5448ecbdad1e366e5435eaea2cc7b3e7833586057668bb0f3b05943b0b8f807
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The embedded document body text is largely unreadable due to encoding issues, but the presence of multiple URLs indicates a malicious intent to redirect users. The primary function appears to be acting as a gateway to other potentially malicious resources.

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://fineartrestoringhudsonvalley.com/uploads/1/3/0/7/130776648/130776648.html#open+ended+questions+are+used+in+motivational+interviewing+because
    • http://webmail.tallentdesign.com/uploads/1/3/1/1/131163740/bedebaguse.pdf
    • http://cindyhoffman.org/uploads/1/3/0/5/130552106/c564ead44b.pdf
    • http://rejuvenatehomesolutions.com/uploads/1/3/0/6/130620370/9790839.pdf
    • http://joshuachi.net/uploads/1/3/0/2/130287495/sunosedux.pdf
    • http://lilybuchanan.com/uploads/1/3/0/5/130550884/nabipunu.pdf
    • http://www.fashioncr8or.com/uploads/1/3/0/5/130551248/dovipedelivipo.pdf
    • http://cleaalsip.com/uploads/1/3/0/6/130604250/tinaxake-fusesiva-mibinireluxo-zofuzasilez.pdf
    • http://greenarchy.com/uploads/1/3/0/5/130589035/3a1b9f743a.pdf
    • http://prodsquad.net/uploads/1/3/0/7/130775588/c54ad6149547c3.pdf
    • http://mosfitness.net/uploads/1/3/0/5/130550967/1674058.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_off0000adf0.bin
019a6493676364f6d8272fe149cc1ac3893655cb508662fa161e32163945b75b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADF0 8512 bytes

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