Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc481a8fce2768e2…

MALICIOUS

PDF

51.1 KB Created: 2020-06-16 15:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebce91eb2248477126233919165aaf21 SHA-1: 56252bb6a40bf1fb86c2abf7cc64c25adfafb62a SHA-256: dc481a8fce2768e208ad09599cb1a23e859e74267ec7aba38237ac2b3b9aa255
72 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many URLs pointing to PDF files hosted on various domains. The document body also contains urgency language, suggesting a lure to click on these links. One of the extracted URLs, http://bike-workx.de/uploads/1/3/1/6/131636755/131636755.html#guapdf+full+version+software, appears to be the primary lure. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bike-workx.de/uploads/1/3/1/6/131636755/131636755.html#guapdf+full+version+software
    • http://zomgzahedis.com/uploads/1/3/0/2/130272877/6638751.pdf
    • http://scrubs4work.com/uploads/1/3/0/6/130604636/020b853be5ce8.pdf
    • http://autodiscover.hamiltonspuremaple.com/uploads/1/3/1/3/131379700/47d946d4a1.pdf
    • http://drcrystaljensen.org/uploads/1/3/0/5/130552043/1709679.pdf
    • http://sefv.jigsaw-group.co.uk/uploads/1/3/1/4/131452839/bupijifudeb_punakazafisa_resitusa.pdf
    • http://zoelle.net/uploads/1/3/0/2/130288731/2963891c57f051.pdf
    • http://rominagarrido.com/uploads/1/3/0/6/130604213/relenuzikomazol.pdf
    • http://cpanel.ashleymartinportfolio.com/uploads/1/3/0/6/130621720/vizakitukanolo.pdf
    • http://ba1d0.bpmtc.com/uploads/1/3/0/8/130814001/ganaz.pdf
    • http://steele.dss.ucdavis.edu/uploads/1/3/1/4/131407144/5ada3acda1b7a0c.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_off00009dfc.bin
77a9e15fae9805626b0c2fe0d9579396648fa38baf0348fad763963a0a0fbc68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFC 10272 bytes

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