Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d5f23459295135…

MALICIOUS

PDF

37.5 KB Authoring application: Soda PDF
MD5: 841ee2d3427fdc83a37a09d1e80657b3 SHA-1: 843697496f8391152281f25b52c0a3129d113058 SHA-256: 04d5f234592951353cac1fec860e70095cf8f5479b01bf3be15b4ae9ae1ddfa6
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple URLs pointing to other PDF files, indicating a potential phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports this, suggesting a lure to trick users into downloading malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicates a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://missionbeachpilates.net/uploads/1/3/0/2/130272524/labevutukam_wizibenutije_xuvutajidamobed.pdf
    • http://babyboot.com.au/uploads/1/3/0/7/130739254/7831869.pdf
    • http://saintalbansnyc.com/uploads/1/3/0/5/130545096/lorizusura-waxitisog-butajipawa.pdf
    • http://mineviewaero.com/uploads/1/3/0/4/130488513/mefunatunotu.pdf
    • http://moodlabnewlife.nl/uploads/1/3/0/5/130551249/130551249.html#google+docs+weekly+calendar+template+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001083.bin
860d96c544427f3c0041fcbe74c40a412433ac8f5bd2632c1eab328f86c49566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1083 8468 bytes

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