Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d2b4b94bc505cd…

MALICIOUS

PDF

38.4 KB Authoring application: PDFBox
MD5: bb062f87f7d9985e4981edd378026288 SHA-1: a3928417cbd32097b71fbe7fde4c0f560b53846a SHA-256: d6d2b4b94bc505cd6a1f021bf49e13d4a3f48504bb4c9fe63df5f8ac2d254e18
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or redirection scheme, often used to distribute malware or conduct phishing attacks. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. No scripts were extracted from this sample.

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://paintinghopefoundation.com/uploads/1/3/0/4/130483508/6060e3c38f1c8.pdf
    • http://towncarservicekirkland.com/uploads/1/3/0/3/130324065/784fbdf4d7ef8b.pdf
    • https://nogifutafe.weebly.com/uploads/1/3/0/5/130588291/suser.pdf
    • http://faithful32x32.com/uploads/1/3/0/6/130639178/puxigutesox.pdf
    • http://onlocation-sh.com/uploads/1/3/0/6/130639511/a8d8c.pdf
    • http://joinloveandresistance.com/uploads/1/3/0/6/130605422/86b3441e.pdf
    • http://shannonmackinnon.weebly.com/uploads/1/3/0/3/130313539/b28a513ac9fa1.pdf
    • http://code1aviationservices.com/uploads/1/3/0/6/130639468/9597870.pdf
    • http://paletamogo.ashurov.com/uploads/2020/01/29/vixopeli.pdf
    • http://whatthesaintsknew.org/uploads/1/3/0/5/130551859/3435503.pdf
    • http://skinsugarrx.com/uploads/1/3/0/5/130550754/130550754.html#baaghi+full+movie+free++mp4+2016

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001403.bin
bc549260eb8f68b88aa04a00b72475fe2369005a61a5d1cf5cf9721ed2407825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1403 8452 bytes

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