Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7d9dd5c86fb499…

MALICIOUS

PDF

43.4 KB Authoring application: Pdftk
MD5: dad14508e3345dea11efff319844dcec SHA-1: 92451d18d1bf8d60d1c69ba6fe9b96aa1e1db4b7 SHA-256: 3e7d9dd5c86fb499a43f3bb5671e026e721db747783987a57cfea5500d7b8bc9
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various domains, suggesting a link farm or redirection scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support a malicious classification. No scripts were extracted from this sample.

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://modernbyken.com/uploads/1/3/0/6/130604657/3c93f.pdf
    • http://abbaproperty.com/uploads/1/3/0/2/130270958/8750424.pdf
    • http://e2biopharma.com/uploads/1/3/0/6/130621325/339b68146.pdf
    • http://oaktreephotos.com/uploads/1/3/0/5/130590432/derevozafek.pdf
    • http://ninktat.com/uploads/1/3/0/4/130483583/3288569.pdf
    • http://priyabery.com/uploads/1/3/0/5/130538990/455b80db032.pdf
    • http://reveriebelgns.com/uploads/1/3/0/4/130476519/8352037.pdf
    • http://utile-it.com/uploads/1/3/0/5/130543656/8b0f7f5aa.pdf
    • http://bohol-immobilier.com/uploads/1/3/0/5/130539345/sefesadinab.pdf
    • http://mommyandbee.com/uploads/1/3/0/6/130620334/8666104.pdf
    • http://rentapartmani.com/uploads/1/3/0/5/130542968/nufupaxasinuza-riziferiwotomen.pdf
    • http://djspizza1.com/uploads/1/3/0/5/130588346/130588346.html#god+of+war+creation+island

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001244.bin
8c13f61dda654e6a74f2274e85dfb9c7057707bd4dbbedf4e7c8c5c54d05ac86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1244 8216 bytes

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