Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb369daad5e4b975…

MALICIOUS

PDF

42.6 KB Authoring application: PDFedit
MD5: b66a648cec546bf7bd6fa1d24e66fc7a SHA-1: f8faf16d76617747d2fb9262d119e1481549e5ed SHA-256: eb369daad5e4b9758c4a11ae24198c4413968faef2f7db1dea2e3906a0c6f27c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files hosted on various domains. This suggests a link farm or redirection mechanism designed to obscure the ultimate destination or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted from this sample.

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://mobilheimoesterreich.eu/uploads/1/3/0/4/130483703/lizunomipe.pdf
    • http://fivuri.cvetnick.ru/uploads/2020/01/27/webumawetazub_gefewabu_josobaweri_ladimujalozife.pdf
    • http://airporthistory.net/uploads/1/3/0/6/130639273/rasabedid.pdf
    • http://browngreasefuel.com/uploads/1/3/0/2/130270994/7764232.pdf
    • https://siroruvotilisat.weebly.com/uploads/1/3/0/2/130270931/funofakezegun.pdf
    • http://anaistorephotographie.com/uploads/1/3/0/6/130604105/78307.pdf
    • http://thepinkmews.com/uploads/1/3/0/5/130546432/130546432.html#typhoid+mary+book

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010f1.bin
21424fa449f3b337fd77404c07ab985dec061715058bc956668f2d333c6bf4cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1 7936 bytes

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