Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb5b43fc6e6fde5…

MALICIOUS

PDF

51.6 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: a45502808a5fb0b840754d738934fe95 SHA-1: 7e05e032972b4d2c90d1d67060e2c5f2b4662da6 SHA-256: 7fb5b43fc6e6fde585690b07d365d95496b567f87eb6601026f480c3f5f9075d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body content is heavily obfuscated and truncated, preventing a more detailed analysis of its specific purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://prosperingmarketing.com/uploads/1/3/0/8/130814065/jeravegadevateb.pdf In PDF document text
    • http://alphaconstructiondevelopment.com/uploads/1/3/0/8/130815277/c7d2980f8.pdfIn PDF document text
    • http://perceptualteaching.org/uploads/1/3/0/7/130739190/8239673.pdfIn PDF document text
    • http://feedtheknead.com/uploads/1/3/0/6/130604770/2402639.pdfIn PDF document text
    • http://mynuagain.com/uploads/1/3/0/4/130476885/benezogikibepepumef.pdfIn PDF document text
    • http://dwmfoundation.org/uploads/1/3/0/2/130272577/ximasebej-damexepif.pdfIn PDF document text
    • http://naimahusseini.de/uploads/1/3/0/5/130539305/tokoros.pdfIn PDF document text
    • http://microml.com/uploads/1/3/0/5/130588745/suwobavuzu_susak_fesobavejagekag.pdfIn PDF document text
    • http://scribejar.com/uploads/1/3/0/7/130775784/bejivizosebuso_bazugawasenika_pinagufazosego_mebumixeta.pdfIn PDF document text
    • http://nicksandmay.com/uploads/1/3/0/2/130272856/webodud.pdfIn PDF document text
    • http://localseonyc.net/uploads/1/3/0/5/130551623/gizebi.pdfIn PDF document text
    • http://misssoutheastpageantry.us/uploads/1/3/0/4/130475938/130475938.html#causes+of+tooth+pulp+infectionIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D8 3116 bytes
SHA-256: 16a5e95e952d18108d1293d23ab2cf42fd017bf7af5f1097447eb848de009448
font_01_sfnt_off0000727c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727C 8812 bytes
SHA-256: d47748b5375a57c350c23eb8700bc855f53f7bde5116163e05a7067bd9872b86

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