Malicious PDF — malware analysis report

Static analysis result for SHA-256 f63b87d2cbaf49ff…

MALICIOUS

PDF

38.1 KB Authoring application: PDFedit
MD5: d89b69f409ef785a67463b9bfed93680 SHA-1: d2efe0348bb47ec71e1783b775c82ab806e8e831 SHA-256: f63b87d2cbaf49ff6641423491a53048b3203b1cc909b4943510479019aec09a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though truncated, mentions 'Lake havasu fishing report' and includes several URLs, suggesting a lure to trick users into visiting malicious sites. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware distribution intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://millenialpages.com/uploads/1/3/0/2/130271201/5478627.pdf
    • http://aperitif-sticks.at/uploads/1/3/0/5/130551402/gikapenerugude_bufineveketozap.pdf
    • http://mjrlashes.com/uploads/1/3/0/6/130640183/2effa740.pdf
    • http://noranajo.ganbangparty.com/uploads/2020/01/29/921729.pdf
    • http://cfthomas.com/uploads/1/3/0/4/130488152/130488152.html#lake+havasu+fishing+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105d.bin
ed51da1d894c017bdb2458efe481b16f6b5e4ff3abf72ef61ab606e0e5d801d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x105D 8540 bytes