Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d60e81f2ac9c901…

MALICIOUS

PDF

44.9 KB Authoring application: OpenOffice.org
MD5: f451782cf9e085be5de3874481ec4833 SHA-1: d854992dca9c60082d5130d50921d391f2bece2e SHA-256: 1d60e81f2ac9c9014ea9d89c15fc8f47d460f6b116ae0e28f918595723ae0759
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious websites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The document body text appears to be corrupted or heavily obfuscated, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://teleprofile.net/uploads/1/3/0/3/130379295/xomib_soresa.pdf
    • http://theorderoftheoak.org/uploads/1/3/0/6/130621357/fedopamolobuvokejar.pdf
    • http://studyinfo.ch/uploads/1/3/0/4/130475989/ribupa.pdf
    • http://dhcenter.net/uploads/1/3/0/4/130488063/lazakedemose-maliwuvaj-jokabudejoluwuj.pdf
    • http://cmfindlay.org/uploads/1/3/0/2/130270892/wubomulelotebun_gevape_muguma.pdf
    • http://thepinstation.com/uploads/1/3/0/4/130476065/66fb95d7cec6.pdf
    • http://datinglass.com/uploads/1/3/0/6/130604492/miluwop.pdf
    • http://karenvankampen.com/uploads/1/3/0/6/130605426/1852327.pdf
    • http://audigoodwillpackage.com/uploads/1/3/0/7/130775465/fosekifikupavasibewo.pdf
    • http://socialresponsecenter.com/uploads/1/3/0/6/130639814/valemupijezuten-nididoninu-tepum.pdf
    • http://tobyfender.com/uploads/1/3/0/6/130639348/rolejotefigij.pdf
    • http://triosimplantdentallab.com/uploads/1/3/0/7/130739980/93e6ee16ff.pdf
    • http://rochecenter.org/uploads/1/3/0/3/130323199/130323199.html#actinomyces+naeslundii+blood+culture

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e7.bin
92291e6c20ca1ea67fdf2734f0946e29b505a9e4062656d988aef4af4a70c419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 7392 bytes

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