Malicious PDF — malware analysis report

Static analysis result for SHA-256 8366bfc2a8eae1c4…

MALICIOUS

PDF

37.2 KB Authoring application: OpenOffice.org
MD5: 2b96589f18b190178e51f47943bdda32 SHA-1: ddcf5897c8744c7d889687df21054666d6e6b40f SHA-256: 8366bfc2a8eae1c441609be3a976c001f37d7d6dba8d34b37b857bdb08431cea
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically related to phishing and traffic redirection. The document body, though partially corrupted, appears to be a lure related to statistics, likely to mask the malicious activity. No scripts were extracted from this sample.

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://fumblydiddles2.com/uploads/1/3/0/2/130291689/66662.pdf
    • http://vrmw.com/uploads/1/3/0/6/130639270/6232524.pdf
    • http://youandmeand.us/uploads/1/3/0/7/130776344/17fc9ed4ee340.pdf
    • http://hostmaster.harkwell-labels.co.uk/uploads/1/3/0/5/130543169/kixifemit.pdf
    • http://missfass.com/uploads/1/3/0/5/130550684/vuwewu.pdf
    • http://norgel.us/uploads/1/3/0/6/130620909/badizafasivexunifes.pdf
    • http://papiramirez.com/uploads/1/3/0/2/130272877/665de4b5f2.pdf
    • http://2012behave.com/uploads/1/3/0/5/130589268/bba076a5479.pdf
    • http://uw403b.com/uploads/1/3/0/5/130540366/pivor_wisozaso_zaxizef_geruwuguwigu.pdf
    • http://spindoctorspromotions.com/uploads/1/3/0/6/130603819/05378ac614b86c2.pdf
    • http://acgr.info/uploads/1/3/0/5/130538870/mewugudoril-fowofawe-fukalogop.pdf
    • http://intentionalfitness.club/uploads/1/3/0/2/130287989/130287989.html#concepto+de+estadistica+descriptiva+e+inferencial+y+sus+aplicaciones
    • http://papiramirez.com/uploads/1/3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000037fe.bin
053e301cd83eda831ffe05448fcfd8278c38f9b2cfccfb0591f193bfd3149eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37FE 9384 bytes

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