Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e34a252cd4002bc…

MALICIOUS

PDF

35.9 KB Authoring application: PDFBox
MD5: 6cd7417e6a811c7e681a5b7c53847be3 SHA-1: 2aeaedf23cd405e326af00b9dfd2855bf966d0c1 SHA-256: 0e34a252cd4002bc5f3f67fff2e173e967c9fac43c60758ef024cfe6c7f01e9a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm for SEO or malicious redirection. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent. The embedded URLs are likely used to host or redirect to further malicious content.

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 https://turufevi.weebly.com/uploads/1/3/0/3/130380084/fubojuwofoz-jezeda-pijedesobiri.pdf
    • http://12250parkway.com/uploads/1/3/0/2/130270831/vesafotibagapazutus.pdf
    • http://onboardxpress.com/uploads/1/3/0/2/130291884/gididegedonosazez.pdf
    • http://kresadmissions.com/uploads/1/3/0/5/130539315/01dae.pdf
    • http://scienceisfunn.com/uploads/1/3/0/5/130539759/tavazamubufunibe.pdf
    • http://temeculavalleyfluteacademy.com/uploads/1/3/0/5/130538923/jenedavaxemitege.pdf
    • http://zaferiwo.mimonostore.com/uploads/2020/01/28/0917826d.pdf
    • http://mynaturalhairspa.com/uploads/1/3/0/5/130590108/130590108.html#formal+letter+thank+you+for+your+reply

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001165.bin
bc11d7e380a7afad7b1adfc5fc72710126316535b7dd494f1ea9de98526b1d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1165 7876 bytes

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