Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ba1af41ba50268…

MALICIOUS

PDF

40.4 KB Authoring application: pstoedit
MD5: 205ea7b1665546be34abeadb3688d97b SHA-1: ce47cc6aa7a921fd675527aec428560652c0b687 SHA-256: b4ba1af41ba5026869f5dc5e1f137920b883928be9225ad2332754f1fbf15fa1
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate a malicious intent to redirect users to potentially harmful content. The ML classifier also flagged this PDF with high confidence.

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://morganwaisner.com/uploads/1/3/0/5/130539516/pikelezovimul.pdf
    • http://novayeastlabs.com/uploads/1/3/0/3/130379336/d3c19b4e.pdf
    • http://mitco-solutions.com/uploads/1/3/0/6/130605270/4c137dd695d3df0.pdf
    • http://mixforteachers.com/uploads/1/3/0/6/130621507/nixaw.pdf
    • http://nawabufa.klondike-gold.info/uploads/2020/01/27/madadenoleduj.pdf
    • http://newyearsknockout.com/uploads/1/3/0/4/130490561/a51fb360983a1.pdf
    • http://colddiamnd.com/uploads/1/3/0/3/130313107/130313107.html#audible+books+won%27+t++to+pc

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115b.bin
a6c3746878cd15b9c6c300c82c633ef979b85851e85d48b05d3afbadc1f1e15b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115B 9816 bytes

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