Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ec2016613c4a92…

MALICIOUS

PDF

35.3 KB Authoring application: Nitro PDF
MD5: bba5471e48b4210e2e6e1c4a767c38d8 SHA-1: d071ec08cdcdb0a386a74fe0c7fa386eb01e90f9 SHA-256: 27ec2016613c4a92a9e0fffc6a66faf8a41d5e053a95bc794afd522f27f5298b
150 Risk Score

Malware Insights

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

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 a phishing campaign designed to redirect users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. 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://chatlabs.ai/uploads/1/3/0/5/130588740/fimereteperiku.pdf
    • http://blazzt.com/uploads/1/3/0/6/130604074/7070753.pdf
    • http://curtiseverettpowell.com/uploads/1/3/0/3/130323884/601497.pdf
    • http://www.rojosiena.org/uploads/1/3/0/4/130436513/6270241.pdf
    • http://speakerboxsupermeet.com/uploads/1/3/0/8/130874286/a5a96b82171fb.pdf
    • http://linzlia.com/uploads/1/3/0/3/130323374/dimupatalagojanowe.pdf
    • http://leonpaintingllc.com/uploads/1/3/0/6/130603808/a709f733.pdf
    • http://smartpromoting.com/uploads/1/3/0/6/130620574/sanofigirokupifolaru.pdf
    • http://www.letskeepittogether.org/uploads/1/3/0/5/130545480/9704151.pdf
    • http://layanshaheen.com/uploads/1/3/0/5/130539205/6527166.pdf
    • http://www.chenyiheng.com/uploads/1/3/0/5/130590714/dotubixetu.pdf
    • http://randdlogisticsllc.com/uploads/1/3/0/3/130324416/130324416.html#deductive-logical+thinking+%28sx%29+test

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337b.bin
1b8908e37ceb9a8b934912adc11f886364cd633d2ba252e128cd486aa10aed74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x337B 7812 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.