Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fdde224a8ac0eb…

MALICIOUS

PDF

41.6 KB Authoring application: QPDF
MD5: ea7914f7392aada7b3768b354de443fa SHA-1: 0616a042dd98e1cfdfd2b7796dc8f7072ac9e644 SHA-256: 46fdde224a8ac0eb56a29f213f2af6c2719f5a7b809c84e93d46e87703796f80
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links disguised as tracing worksheets, a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely serving further malicious content or redirecting to phishing sites.

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://mwmorriscreative.com/uploads/1/3/0/5/130546923/6524d74a44d71.pdf
    • http://stkyrelchoir.com/uploads/1/3/0/7/130739845/gelego-girikimilufakel.pdf
    • http://brandingfaithdesigns.com/uploads/1/3/0/2/130271004/ba467a4e1.pdf
    • http://forexinaustralia.club/uploads/2020/01/28/nefivonipu-voweniva-xijujawitax-murikomo.pdf
    • http://coreenergysolutions.com/uploads/1/3/0/5/130542953/3580000.pdf
    • http://miracleinabucket.com/uploads/1/3/0/2/130273993/130273993.html#letter+c+tracing+worksheets+for+preschoolers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c0.bin
ebcd311511720e38b36655531e1b47b12ae44aa92665aaa2ea5bcf5a4dc92526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0 7756 bytes

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