Malicious PDF — malware analysis report

Static analysis result for SHA-256 5baa132e375ac41c…

MALICIOUS

PDF

58.0 KB Authoring application: OpenOffice.org
MD5: 2ada15d1ac7ea785ee1d294c248de933 SHA-1: cfcd3c1527208590a80226ce5a1ac2a583066871 SHA-256: 5baa132e375ac41c8fb45525732122b7c0acaf290d75b63cd88722ac521aefb3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links to other PDF files, suggesting a link farm designed for SEO manipulation or to host malicious content. The presence of a "download button" heuristic further supports the idea that the document is intended to trick users into downloading additional files. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' confirms the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://shermansmallengines.com/uploads/1/3/0/6/130604782/39e99d.pdf
    • http://s6wraps.com/uploads/1/3/0/6/130605405/mezadurizixa-kisimeludoboza-vewazem.pdf
    • http://bardinterns.com/uploads/1/3/0/7/130739879/43a9ebd45b18886.pdf
    • http://tsv-fcblegenden.de/uploads/1/3/0/6/130603855/263219.pdf
    • http://kingdomqueens.net/uploads/1/3/0/3/130313130/jebilolen-pofifiripagesup-jinimad-fakisakevutebav.pdf
    • http://monsieurcoulibaly.com/uploads/1/3/0/6/130603763/sugokuw.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/5/130551697/130551697.html#gta+5+bike+cheat+code+ps3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a6.bin
fe5b136aa97e2b7578317b468c5ee30312ae6468a5d0f9014b471736aa68a97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6 8640 bytes

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