Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b64719b5b0103a…

MALICIOUS

PDF

34.3 KB Authoring application: pdf-parser
MD5: bd320c7c8bc969971eaa6c4ccb4368fb SHA-1: ccde35faaeba75474a1a1d2c7a0121c5ae3494ed SHA-256: 81b64719b5b0103a3919eb517d628dd641a3a29b14e007622cf746ee7a4e2739
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or traffic redirection. No scripts were extracted, so the primary attack vector appears to be the link farm.

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://mindfulnesshoy.com/uploads/1/3/0/2/130272339/09b8ebc7fd3f9e.pdf
    • http://sarasotabicycles.com/uploads/1/3/0/5/130551253/7237727.pdf
    • http://jantalist.net/uploads/1/3/0/4/130483354/zinareguripego.pdf
    • http://makemoneystreaming.com/uploads/1/3/0/6/130639448/7260575.pdf
    • http://youngatartmn.com/uploads/1/3/0/5/130589313/8287254.pdf
    • http://wtoservices.com/uploads/1/3/0/3/130323555/ccaec6ac9.pdf
    • http://puertorican-bondlosses.com/uploads/1/3/0/4/130483364/2589037.pdf
    • http://odroslore.com/uploads/1/3/0/7/130739446/412016.pdf
    • http://mymountains.fr/uploads/1/3/0/6/130622103/nalixumugenav.pdf
    • http://lovefoundationproject.com/uploads/1/3/0/5/130588427/627206.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/6/130620672/130620672.html#ielts+speaking+task+2+questions+and+answers+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000301f.bin
4e95cbf2fc0d0a78e9e371e5d474ddbe298290915ec797da2b146a7ec0b3a48d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x301F 7928 bytes

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