Malicious PDF — malware analysis report

Static analysis result for SHA-256 2647eef42750b050…

MALICIOUS

PDF

28.9 KB Authoring application: Scribus
MD5: edbec80f786ce5d1349bac68e7945844 SHA-1: b9d0517829c17a400062017cae9f6e0ed671bf4a SHA-256: 2647eef42750b050bb1e72afcefe749d7d2067fb9ac03bf92f0bc14916bcddf8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The primary attack pattern appears to be SEO poisoning or phishing, directing users to a multitude of potentially malicious PDF documents hosted on various domains.

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://myawaribox.com/uploads/1/3/0/2/130272603/c1fe2f12526.pdf
    • http://publicationorganizer.com/uploads/1/3/0/5/130541817/c4271d53ac0.pdf
    • http://ns3.arcasdesigns.com/uploads/1/3/0/5/130545382/9910639.pdf
    • http://junbinow.org/uploads/1/3/0/4/130476043/vojejawoxukud.pdf
    • http://www.shamanicpaintress.com/uploads/1/3/0/2/130289327/4026436.pdf
    • http://mobilosophy.com/uploads/1/3/0/4/130489168/sugitunu.pdf
    • http://tools.stringbead.com/uploads/1/3/0/6/130620542/09669f298fc8.pdf
    • http://solcreative.co.nz/uploads/1/3/0/6/130621176/ead16f4.pdf
    • http://mujereslunacreciente.com/uploads/1/3/0/5/130588607/5465616.pdf
    • http://www.fmatest.com/uploads/1/3/0/8/130814921/wibemefug.pdf
    • http://www.southlaketahoetowing.net/uploads/1/3/0/7/130776366/guwufinijuzus-lureti-xuwowagodoraxi.pdf
    • http://titansix.com.au/uploads/1/3/0/3/130313376/faxawafuxe_koximamonig.pdf
    • http://cpanel.stefanaarnio.com/uploads/1/3/0/4/130489025/130489025.html#herman+miller+aeron+seat+size

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001a6f.bin
721e52ea57b74120626b64bd87bb1ea1f9e3eab380647cf1556580f165fb7fed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6F 7300 bytes

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