Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a058bafda649726…

MALICIOUS

PDF

132.1 KB Authoring application: GIMP
MD5: 4000707a14ac0212702ff2373ebc1d79 SHA-1: d24f1fd38436340a72a6d3625654a132ce224721 SHA-256: 6a058bafda64972636b418d7fb5c53ffb188b3d66d8e6631a46d8737ad8e28b7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF and HTML files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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://nstrajectory.org/uploads/1/3/0/5/130547613/jowufidonuvezuwi.pdf
    • https://fepudenaka.weebly.com/uploads/1/3/0/3/130313783/tisuxowu.pdf
    • http://kofc869.org/uploads/1/3/0/5/130589427/2860677.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/5/130588922/130588922.html#aha%2Fasa+hemorrhagic+stroke+guidelines+2018+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001388.bin
ef38d721253c972a3ccc540d78f8542ea7e563df72ec6ed93b1e8a1e0155e9e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1388 10644 bytes

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