Malicious PDF — malware analysis report

Static analysis result for SHA-256 23045b5baeadbb68…

MALICIOUS

PDF

35.3 KB Authoring application: LibreOffice
MD5: 712e708edd58b145af1cdbc16c0c90fb SHA-1: 6de82bd1d0efd17d84324608f0d8940d669ab371 SHA-256: 23045b5baeadbb68b9b6a9cdc2881762d91eda5f3343daf6a7e0ab6e9c60728e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body, though corrupted, contains text related to 'ac generator' and URLs, suggesting a lure to external content. The primary attack pattern involves directing users to a multitude of potentially malicious 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://q8caad.com/uploads/1/3/0/4/130491418/kozolik.pdf
    • http://sitesavings.shop/uploads/1/3/0/6/130639503/midak_tiripupi_pulafujolevube.pdf
    • http://aasoftballclub.com/uploads/1/3/0/4/130436410/4048395.pdf
    • http://worksafehsesolutions.com/uploads/1/3/0/6/130621663/3838072.pdf
    • http://kingwoodtreeservices.com/uploads/1/3/0/5/130588613/ribepivikurugiviwo.pdf
    • http://mojopix.net/uploads/1/3/0/5/130541733/50d402ec1261d.pdf
    • https://toromevomupunar.weebly.com/uploads/1/3/0/2/130289184/kuwezarerekimid_gibasilisapo_sagezi_xapenoso.pdf
    • http://thediplip.com/uploads/1/3/0/6/130620633/dajexilo.pdf
    • http://daturafashion.com/uploads/1/3/0/6/130621431/8425386.pdf
    • http://djsacademy.com/uploads/1/3/0/5/130540172/130540172.html#explain+the+principle+operation+of+ac+generator

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001218.bin
35144b72fdbd65470f5072372e3d9bbc6001d74c054620aeb642ec6d91f7cbfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1218 7812 bytes

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