Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecfc8023639b1eb7…

MALICIOUS

PDF

35.0 KB Authoring application: OpenOffice Draw First seen: 2020-09-24
MD5: 90fc513884f4818024cdf1aba14d21b7 SHA-1: 986b0f5ad1730352d271ebb9a70a6fb08e569152 SHA-256: ecfc8023639b1eb7f72c79b65effdb9f7a4877b3faa4087d46e7f95912d27734
152 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and exhibits characteristics of a link farm, containing numerous embedded URLs pointing to other PDF files. The primary attack pattern involves directing users to these external resources, which are likely designed for phishing or further malware delivery. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://mail.centerrec.com/uploads/1/3/0/4/130489530/xefis-napef-mefuwivigapi-zixusilitalam.pdf In PDF document text
    • http://borzlo.com/uploads/1/3/0/5/130545745/29eca93e49.pdfIn PDF document text
    • http://motionautodetailing.net/uploads/1/3/0/5/130542964/b0b01b5dda1cb1e.pdfIn PDF document text
    • http://btctree.net/uploads/1/3/0/5/130539843/551d9e1cc828e16.pdfIn PDF document text
    • http://shine-bu.com/uploads/1/3/0/6/130603731/3a33c62ad1.pdfIn PDF document text
    • http://plumbingsantaclarita.net/uploads/1/3/0/7/130739917/1087859.pdfIn PDF document text
    • http://landofosllc.net/uploads/1/3/0/6/130605339/1688301.pdfIn PDF document text
    • http://premioscocacola.com/uploads/1/3/0/7/130739399/xosatoxufipara.pdfIn PDF document text
    • http://bestarizonahomesforsale.com/uploads/1/3/0/6/130620366/3268651.pdfIn PDF document text
    • http://rem5vrlab.com/uploads/1/3/0/5/130539691/7153768.pdfIn PDF document text
    • http://www.jemeenabellydance.com/uploads/1/3/0/7/130740054/eb6d9b84ad01a11.pdfIn PDF document text
    • http://chrisbosgraaf.com/uploads/1/3/0/7/130775130/130775130.html#positivist+research+paradigmsIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BE 8080 bytes
SHA-256: cd0328a7443474120bba6f06cbe0e183a42c7766e098256ef290d1a8a230a578

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