Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e7de5efcff6913…

MALICIOUS

PDF

44.9 KB Authoring application: Inkscape
MD5: 3048c937b4ab929469391bc5ffb41022 SHA-1: de985dcd36807808eab2adf851a28aa4c108e504 SHA-256: d4e7de5efcff691339f72427b9e7b2f3ecf703657614809c4257b5aa239ce90f
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used in SEO poisoning attacks to drive traffic to malicious sites. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The embedded URLs point to domains that appear to host further PDF or HTML content, suggesting a multi-stage redirection or download process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nasr-nabiha.ca/uploads/1/3/0/5/130589250/zovuzatosalotex.pdf
    • http://a1-therapy.com/uploads/1/3/0/2/130289782/7370184.pdf
    • http://lazera.com/uploads/1/3/0/6/130639333/3374354.pdf
    • http://djspizza1.com/uploads/1/3/0/2/130288559/130288559.html#java+apache+poi+xlsx+to+csv

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001031.bin
eb205003af8dfbecdd86bce9c31a870f4bfcfcad730b936d61660b0347845c6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1031 9600 bytes