Malicious PDF — malware analysis report

Static analysis result for SHA-256 7075805f655ec610…

MALICIOUS

PDF

34.9 KB Authoring application: Solid Converter PDF First seen: 2021-06-13
MD5: 4901be26145e5d74bbf2699e45074fa3 SHA-1: 6bc3ff68502ef0739a1c9d61747939737c97b36d SHA-256: 7075805f655ec6109e2d54a7036dc8cf13ff9ddc7fff9fae43573f4cd47e7c45
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a link farm or SEO manipulation tactic, potentially to distribute malware or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 https://salamepipirekab.weebly.com/uploads/1/3/0/2/130271206/ddce73.pdf In PDF document text
    • http://comeoutinbusiness.com/uploads/1/3/0/4/130436040/7877861.pdfIn PDF document text
    • https://texujidokurad.weebly.com/uploads/1/3/0/2/130288453/3c3319700.pdfIn PDF document text
    • http://100wwclickingcounty.org/uploads/1/3/0/4/130494478/nutibemiwefu-runuli-nuravabubo.pdfIn PDF document text
    • http://nu-trek.com/uploads/1/3/0/4/130483578/bff4e55.pdfIn PDF document text
    • http://easytobuyahouse.com/uploads/1/3/0/6/130621272/suxebojov.pdfIn PDF document text
    • https://jelereti.weebly.com/uploads/1/3/0/3/130323491/0fca73579ce41.pdfIn PDF document text
    • http://viceroyautotrans.com/uploads/1/3/0/6/130605219/lefunimodukek.pdfIn PDF document text
    • http://pieceofmindproject.com/uploads/1/3/0/4/130476066/zudatef.pdfIn PDF document text
    • http://kcranchllc.com/uploads/1/3/0/6/130605438/pekafidepifo-vemovegeris-rizibutebaxilim.pdfIn PDF document text
    • http://5xchurchplanting.com/uploads/1/3/0/5/130540284/91eb7d.pdfIn PDF document text
    • http://valtimonteatteri.fi/uploads/1/3/0/6/130621610/libotaxu-didiwasuzu.pdfIn PDF document text
    • http://colddiamnd.com/uploads/1/3/0/3/130379104/130379104.html#openstack+cli+githubIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337 8048 bytes
SHA-256: 3102ec9e740889610a176fe94434a2c5fc74389cbc0462f415d2965db70e12f6

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