Malicious PDF — malware analysis report

Static analysis result for SHA-256 8227ed0dc5a781e9…

MALICIOUS

PDF

32.5 KB Authoring application: Solid Converter PDF
MD5: 0cca0e4588f9a11c17686045d6527c7c SHA-1: 7490070b6e0a104dfd8fa6b1d3abb6778023a0e1 SHA-256: 8227ed0dc5a781e9bedbf530db4440d5102ac46f7049344db21e36953f5dd3cd
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used for SEO poisoning or redirecting users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded links likely serve as a lure to download further payloads or lead to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://pushbackvac.com/uploads/1/3/0/4/130490609/mawegozovelesa.pdf
    • http://pujub.cityglush12.icu/uploads/2020/01/29/lewojulu-natalaw.pdf
    • http://rejeda.translogistic-svc.com/uploads/2020/01/28/bf14fa.pdf
    • http://readytoexhaleworkshops.com/uploads/1/3/0/2/130272241/3638641.pdf
    • http://perisedighlaw.com/uploads/1/3/0/4/130488734/gamojezuj-fejijotu.pdf
    • http://sijus.fisiodoctor.ru/uploads/2020/01/29/5575308.pdf
    • http://xuse.inzim-tex.com/uploads/2020/01/28/8410610.pdf
    • http://partyhaireverywhere.com/uploads/1/3/0/6/130620150/2137152.pdf
    • http://psupostdoc.org/uploads/1/3/0/6/130621641/1d7cb3.pdf
    • http://humannaturefoundation.com/uploads/1/3/0/5/130541133/130541133.html#primary+colour+wheel+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011dc.bin
ae2e933235b38fb75600677e0569ddfde0ee871c98f07b5341af0fe0120155a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC 8256 bytes

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