Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fbc6707ecc05e2…

MALICIOUS

PDF

39.5 KB Authoring application: LibreOffice
MD5: 77697bf80346d1e449b63a979e54e778 SHA-1: 2d3b222fe40c48ce0d13a7ae376baa12e5365837 SHA-256: 34fbc6707ecc05e2d4206a230b58c0de3eea2f5e4d6bb716c36c57db54676721
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further suggests a malicious intent, likely related to phishing or traffic redirection. The document body, though heavily obfuscated, contains references to 'Fases de la fecundacion pdf', suggesting a lure to disguise the malicious link farm. The primary attack pattern involves redirecting users to a network of PDF files hosted on various domains.

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://ontargetgunworks.com/uploads/1/3/0/5/130551366/526a4e.pdf
    • http://adoxian.com/uploads/1/3/0/2/130289474/retaz-ketit-dosatumavod.pdf
    • http://nati-artist.com/uploads/1/3/0/3/130313053/gabajeguvijo.pdf
    • http://dr-ballouz.eu/uploads/1/3/0/4/130483973/8d545dd9b4f1.pdf
    • http://mrcrosbyswebsite.com/uploads/1/3/0/5/130543038/7567647.pdf
    • http://nimatennis.com.au/uploads/1/3/0/5/130590191/4857751.pdf
    • http://rosuvan.sanelylife.com/uploads/2020/01/28/wozefanaziba.pdf
    • http://vliegendestoel.nl/uploads/1/3/0/6/130639706/sutigidop_jawigutitad.pdf
    • http://multistreams.com/uploads/1/3/0/3/130312993/130312993.html#fases+de+la+fecundacion+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d6.bin
65c97ea388259e1e3b0b4a1d14c76583185294ea2abef99829d367c7bcaacddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6 9124 bytes

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