Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bbff0f585fb76e…

MALICIOUS

PDF

40.3 KB Authoring application: Adobe PDF Library 9.0
MD5: d6df6166dfd99c2ca0aa09d033c6bae1 SHA-1: 9184bb8c6bae376f63a15efcb217b9b441b0890a SHA-256: 48bbff0f585fb76e5920a2a372cc7c53faeb2269fda52675916cefa1f028ddd9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://www.packethunters.com/uploads/1/3/0/9/130969604/dolunibesokugi.pdf
    • http://yourtravelplanning.com/uploads/1/3/0/7/130776343/2986629.pdf
    • http://sfiys.net/uploads/1/3/0/5/130541803/lobapaju.pdf
    • http://hollyboggs.com/uploads/1/3/0/6/130604589/f258bb57f.pdf
    • http://susenrumposch.com/uploads/1/3/0/9/130969847/fbf2a26dd75b10.pdf
    • http://swctv.com/uploads/1/3/0/3/130379423/zonakuni-xujiliburuduf-xivibatujulewe.pdf
    • http://mail.torontogratitude.org/uploads/1/3/0/5/130588943/defaboroxa.pdf
    • http://frontlineplumbingheatingair.com/uploads/1/3/0/5/130551184/e609293.pdf
    • http://neurohorizonpharma.com/uploads/1/3/0/3/130323449/2718606.pdf
    • http://nohur.com/uploads/1/3/0/6/130639203/givitilajejusido.pdf
    • http://axesatmobility.net/uploads/1/3/0/2/130274291/9ba928b3.pdf
    • http://catalog2buy.com/uploads/1/3/0/5/130550844/a3a4227d1044c.pdf
    • http://quenchlandscapes.com/uploads/1/3/0/6/130621906/26650.pdf
    • http://www.therqamgt.com/uploads/1/3/0/7/130776676/niper.pdf
    • http://amazingembroiderydesigns.net/uploads/1/3/0/7/130740490/a7565286ee6b5.pdf
    • http://kerstetter5k.com/uploads/1/3/0/7/130740618/8c19a8215.pdf
    • http://4wys0r.bdgct.com/uploads/1/3/0/8/130815009/130815009.html#anatomy+of+anterior+cubital+fossa
    • http://amazingembroiderydesigns.net/uploads/1/3/0/7/13074

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004221.bin
c0bfc520a09ed1ca658be3aebdb978fc707827e45e0011599564db88f2e1a363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4221 8276 bytes

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