Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c02d9091f0fff17…

MALICIOUS

PDF

61.2 KB Authoring application: Nitro PDF
MD5: 286e3cb4dbda6abb47a1f55079dff1de SHA-1: 8346f9dde0802578f22cb2a898e24016679e7871 SHA-256: 3c02d9091f0fff17cd890272aa727b6d75e2d7168622111f7a394e2812c54fb1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded external links to other PDF files, a technique often used for SEO manipulation or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a campaign to redirect users to potentially harmful content.

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://bubblesoccergeelong.com.au/uploads/1/3/0/5/130539241/kizif.pdf
    • http://cajarycapital.com/uploads/1/3/0/6/130622009/3d585ed6d75c.pdf
    • http://funeralministry.com/uploads/1/3/0/4/130476180/zowixawezevaw-ferore.pdf
    • http://juzederu.chemicalcontainer.ru/uploads/2020/01/28/4607098.pdf
    • http://powerofbankinginyourhands.com/uploads/1/3/0/4/130490915/0d71b4.pdf
    • http://be5k.org/uploads/1/3/0/2/130289800/lojugitafobodip.pdf
    • http://ohiobiplanes.com/uploads/1/3/0/4/130478484/07eaf.pdf
    • http://avatarasocial.com/uploads/1/3/0/5/130550769/3c15be8.pdf
    • http://xixeba.osada.fun/uploads/2020/01/29/muzeruxenefutuzasun.pdf
    • http://workplayplan.com/uploads/1/3/0/5/130544823/wujuviputi-bisome.pdf
    • http://mrsdesmond3.weebly.com/uploads/1/3/0/5/130588560/9868673.pdf
    • http://paxaxinoj.sampstealer.xyz/uploads/2020/01/28/timekipuwizoganuxaj.pdf
    • http://nioba.me/uploads/2020/01/29/javumenonavapojuleju.pdf
    • http://alaskadalmatians.com/uploads/1/3/0/5/130543054/rajif.pdf
    • http://rwpdivephotography.com/uploads/1/3/0/6/130604650/gukewoxanoz_nibalap_defetomiso_kajafuku.pdf
    • http://trentriverdesigns.com/uploads/1/3/0/2/130289163/130289163.html#does+early+pregnancy+cause+stomach+ache

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014ce.bin
c9000375476a5415878f0af6ab25e507a5b10ff0499a52976ddb7df7de257589		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CE 8556 bytes

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