Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e3736abc5c5524…

MALICIOUS

PDF

31.2 KB Authoring application: pstoedit
MD5: c6672ba140f722fa1dfe364c036cad02 SHA-1: 11ef6ac15866982c0a30606317a500770074d2d2 SHA-256: 09e3736abc5c5524832652c953998f8837eb225694cb438634721651c1edb316
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm pointing to numerous PDF files hosted on various domains. This behavior is indicative of SEO manipulation or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification.

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://semulig.7x4.ru/uploads/2020/01/27/fasafeterepekasadu.pdf
    • http://ror.restoran-yugoslavia.ru/uploads/2020/01/28/fudisa.pdf
    • http://tivedari.defki.icu/uploads/2020/01/27/ziguvixes-mulug-doselev.pdf
    • http://gatetukatu.cozystuff.ru/uploads/2020/01/27/lojoxazufujaf.pdf
    • http://suor.pt/uploads/1/3/0/4/130476722/95106432.pdf
    • http://tewiz.passlink.ru/uploads/2020/01/28/bimetasugi_sobapax_maren.pdf
    • http://planetarydrive.org/uploads/1/3/0/6/130604111/senikiloj.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/5/130539990/130539990.html#beyblade+burst+telugu+episodes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001172.bin
9ed81c14d658bd17db21bc86342d1216606e688f217921bf59ef1939dc77c92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1172 8264 bytes

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