Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01fecbfa91f8c32…

MALICIOUS

PDF

40.5 KB Authoring application: Karbon
MD5: 1222ba481c7e00eaabad17a7277f474d SHA-1: 686d607c9692864ffedec976c24138adfc8f7eab SHA-256: c01fecbfa91f8c324a351df19aa9482b0ef8c485beba911ded89f3f078f60144
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://kobomvelik.alta.si/uploads/1/3/0/4/130436033/4b41117b07176.pdf
    • http://powdermillbusinesscenter.com/uploads/1/3/0/7/130738944/fosarig_vefudexa_kowajafumad_xuxazunapiso.pdf
    • http://bldngts.com/uploads/1/3/0/3/130379549/gozofifi.pdf
    • http://footballcollectible.org/uploads/1/3/0/5/130541137/kiferidoluk.pdf
    • http://shc-ilc.hct.ac.ae/uploads/1/3/0/2/130270956/45029601f.pdf
    • http://mermaidtidying.com/uploads/1/3/0/7/130775386/simosivalujujaji.pdf
    • http://monipirie.com/uploads/1/3/0/5/130590296/jewagarolawaf.pdf
    • http://translatorquote.com/uploads/1/3/0/4/130436014/5590902.pdf
    • http://coreenergysolutions.com/uploads/1/3/0/5/130540585/woduxikizeje.pdf
    • http://neufeldvolk.com/uploads/1/3/0/4/130476214/6512049.pdf
    • http://abrandex-design.com/uploads/1/3/0/2/130289775/7b25b360.pdf
    • http://michanti.com/uploads/1/3/0/8/130814328/4467042.pdf
    • http://scrumboards.com/uploads/1/3/0/6/130640015/130640015.html#second+language+acquisition+theories+examples
    • http://mermaidtidying.com/uploads/1/3/0/7/130775386/simosivalujujaji

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043df.bin
fd75b9eca4349a37f47246e32221dd35c999ddc77912d7eb3e11fe0cfe883220		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43DF 9308 bytes

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