Malicious PDF — malware analysis report

Static analysis result for SHA-256 2390dcbbad1f3852…

MALICIOUS

PDF

37.0 KB Created: 2020-06-11 19:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 805e77007db85cf58f92543ea52e31d6 SHA-1: 17f8cf2b0673abb3d71ae159333d9f6594ed7836 SHA-256: 2390dcbbad1f3852a0fb8195343a968d9fc0010a7d4bb2afb7e2b934b9d0ebd6
62 Risk Score

Malware Insights

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

The PDF document 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 SEO spam campaign. The document body text is heavily obfuscated and contains some of the same URLs, reinforcing the idea that the primary purpose is to redirect users to external content. 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://seastar.websalve.com/uploads/1/3/1/3/131383900/131383900.html#kinesis+exercise+wall
    • http://prafdestele.org/uploads/1/3/1/3/131382113/6f8f5.pdf
    • http://happypawsweiser.com/uploads/1/3/0/4/130488172/roxotimufaj.pdf
    • http://southernsunrisedesigns.com/uploads/1/3/1/4/131406068/tujaxinapeliwugo.pdf
    • http://r8.undesirable.us/uploads/1/3/0/5/130543121/furowavetan.pdf
    • http://tarotlifecoaching.com/uploads/1/3/0/4/130435717/4274516.pdf
    • http://wiltshirepestservices.com/uploads/1/3/0/7/130775478/xarot.pdf
    • http://thesweetmagnoliahomedecor.com/uploads/1/3/1/3/131380993/fcc16.pdf
    • http://4ugoodfood.com/uploads/1/3/0/7/130740477/pimixidagifo_pasifet_pusasesuk.pdf
    • http://ladysden.com/uploads/1/3/0/7/130775085/pasesevajitoja-vudoxe-zivojij.pdf
    • http://ns2.patmorancasting.com/uploads/1/3/1/1/131164314/nosilogikevusawolevo.pdf
    • http://2gl.undesirable.us/uploads/1/3/0/5/130590298/foletu.pdf
    • https://lasabisovi.files.wordpress.com/2020/06/kebajogu.pdf
    • https://kexunezelip.files.wordpress.com/2020/06/36940283859.pdf
    • https://dulikowisu.files.wordpress.com/2020/06/7642056623.pdf
    • https://kegivisoxibu.files.wordpress.com/2020/06/tegad.pdf
    • https://likabizev485265161.files.wordpress.com/2020/06/sowimagilevuxirogazo.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_off000064ac.bin
be85f10d6c0e8bbe630808a57b20002b33b3cb7f8a33a6094b42b59c92171279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AC 10584 bytes

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