Malicious PDF — malware analysis report

Static analysis result for SHA-256 8044e1f4ea69f741…

MALICIOUS

PDF

34.5 KB Authoring application: Inkscape
MD5: 49e9cf9e7908484cbe44823fe5148ad7 SHA-1: 381c4bf535b576db84e13af8c5cf8ae8e8a55bb6 SHA-256: 8044e1f4ea69f74193a675b1d6b1e8d5cd0c5dafb9f2963dbb95101c017a2199
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on external domains. This indicates a phishing or malicious content distribution attempt. The ClamAV detection further supports the malicious nature of the file, classifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted from this sample, and the document body contained mostly garbled text, making it difficult to ascertain a specific lure beyond the link farm.

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://d-jedi.com/uploads/1/3/0/6/130620587/jikuzok.pdf
    • http://bulverdepregnancy.org/uploads/1/3/0/2/130270887/pufejerorema.pdf
    • http://lillianjue.net/uploads/1/3/0/6/130621603/fulapomeko-pobufudufud-zexitabimuwag.pdf
    • http://rldindoorbaseballfacility.com/uploads/1/3/0/4/130483400/d6dc3556ff.pdf
    • http://dadeclinic.com/uploads/1/3/0/4/130483710/soxobi_livejuro.pdf
    • http://electricianmartincounty.com/uploads/1/3/0/2/130288761/6833944.pdf
    • http://booholiday.com/uploads/1/3/0/2/130270743/3202684.pdf
    • http://proper-boston.com/uploads/1/3/0/2/130287938/lebemomaj-nuxiremidubuto.pdf
    • http://juliejesternewman.com/uploads/1/3/0/6/130621702/130621702.html#hedwig+pumpkin+carving+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001372.bin
09d814cb5354c525042b9719754318947ee1dfe194f35fac9590d163912e426b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1372 8572 bytes

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