Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86f6338d25d7086…

MALICIOUS

PDF

42.9 KB Authoring application: Smallpdf Desktop
MD5: fe2222e01c55f4dd50d49d0c87c5df45 SHA-1: 99870cba9f6479db4ab4d6938ecf11975332469a SHA-256: e86f6338d25d7086a5c99723cb8df9a2e26213a6187c2f05e8fdbf74f16ede69
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The primary attack pattern involves directing users to a vast network of linked PDF documents hosted on various domains, likely for SEO spam or to distribute further malicious content. No scripts were extracted from this sample.

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://kaartstudio.com/uploads/1/3/0/5/130539235/6519749.pdf
    • http://carsonmugs.com/uploads/1/3/0/3/130324065/489f5316de1ab.pdf
    • http://bluecornconsultingllc.com/uploads/1/3/0/6/130604251/patisavag.pdf
    • http://jessicastameyshairbydesign.com/uploads/1/3/0/7/130739590/e2331172f8e49ea.pdf
    • http://stylesnsmilessalon.org/uploads/1/3/0/7/130738524/pejaped.pdf
    • http://www.designerfundraising.org/uploads/1/3/0/7/130739744/caabb5.pdf
    • http://muchnesslife.com/uploads/1/3/0/5/130588517/tizurifapa.pdf
    • http://rosevillebailbonds.net/uploads/1/3/0/8/130873715/8023532.pdf
    • http://charlidrawz.com/uploads/1/3/0/5/130588546/59faa.pdf
    • http://designboxie.com/uploads/1/3/0/5/130543207/4766647.pdf
    • http://mylifesreflections.com/uploads/1/3/0/4/130436204/muwevexisel.pdf
    • http://rickrajter.net/uploads/1/3/0/6/130604826/vonogotada-letezepisina-gokunavonup-vusotix.pdf
    • http://businessplus-site-editor.com/uploads/1/3/0/7/130775825/6764090.pdf
    • http://vwlo3y.salon225.com/uploads/1/3/0/8/130814652/130814652.html#relationship+of+marginal+cost+and+average+variable+cost
    • http://bluecornco

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003828.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3828 16036 bytes
font_01_sfnt_off00004f37.bin
13c689b6956eb253bc0684c0c98c8723ee15e3afef67f0f8a4d6f31595c2434a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F37 7852 bytes

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