Malicious PDF — malware analysis report

Static analysis result for SHA-256 3815618dcba983c8…

MALICIOUS

PDF

33.0 KB Authoring application: pstoedit
MD5: d4c2703bb678bb0beab9c2af31859505 SHA-1: db297531bac9100f0f2e5b87263408bf682eba71 SHA-256: 3815618dcba983c8a5016f1b3a9a952fa124371d50f45d1b96604e419986bfe8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous external URLs, suggesting a phishing or redirection attempt. 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://eterpath.com/uploads/1/3/0/5/130551654/wixaviwemomawipabup.pdf
    • http://laising-swd.de/uploads/1/3/0/5/130550911/2bc3f2e579d2.pdf
    • http://amberbeuthien.com/uploads/1/3/0/3/130324112/xanevebe.pdf
    • http://daydreambakery.com/uploads/1/3/0/4/130488759/7592432.pdf
    • http://alinacruzfengshui.com/uploads/1/3/0/8/130814355/71798.pdf
    • http://sharedtravel.voyagerwebsites.com/uploads/1/3/0/2/130291689/130291689.html#aashto+green+book+2018+sight+distance

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105f.bin
1daaecc03f9b32466c681ba5771e03133ae8ea1fdf06195214a691147550861c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F 8064 bytes

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