Malicious PDF — malware analysis report

Static analysis result for SHA-256 6becdc2e8c9ec81d…

MALICIOUS

PDF

40.2 KB Authoring application: PDF Studio
MD5: ceaaa193fe2f0c1e1a8327d174d471a7 SHA-1: 70d689338f266cf12db39b509111f07246d28d5a SHA-256: 6becdc2e8c9ec81de99ac84d4daee84af1c2128461ed44c1d8d295cbf127dd4b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to host malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://16365redington.com/uploads/1/3/0/6/130621940/e17008a.pdf
    • http://deb.nsuxa.net/uploads/2020/01/28/fofinunazajiwer.pdf
    • http://blvd420.com/uploads/1/3/0/6/130621384/jobaruzoxiw.pdf
    • http://aliveatfivekingston.com/uploads/1/3/0/2/130271121/3b36263c2e80b68.pdf
    • http://milesalumniatl.com/uploads/1/3/0/5/130550684/zutaguzibubofamawe.pdf
    • http://undiscoveredactress.com/uploads/1/3/0/6/130604040/sukexesuwazepagu.pdf
    • http://nashvilledancecooperative.net/uploads/1/3/0/3/130379361/741360.pdf
    • http://woodridgemusicclub.com/uploads/1/3/0/4/130483617/3787284.pdf
    • http://forshua.com/uploads/1/3/0/5/130540461/rajatel-zelimumagot.pdf
    • http://midamericanthermal.com/uploads/1/3/0/3/130313230/9470114.pdf
    • http://slpresource.com/uploads/1/3/0/4/130476066/kigegiwudegufup_gugibesa_kelapotasen_zajerozuvebajaz.pdf
    • http://prettysimpleorganizing.net/uploads/1/3/0/6/130604393/wefitejijowufub.pdf
    • http://reboundat.com/uploads/1/3/0/5/130551661/130551661.html#kenmore+series+500+washing+machine+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001533.bin
aacb8a5adf068ecd4bf1e6bc165b2e28c35b1b8324b52893f85b6647804db20b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1533 8392 bytes

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