Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b995ad5d78d7ec…

MALICIOUS

PDF

47.7 KB Authoring application: OpenOffice Draw
MD5: 9ce8bc9648c74940342b0176c686ab6d SHA-1: bbc0ba465187e68d91d021cddb37ae44cdb61b3e SHA-256: 70b995ad5d78d7eca44cd856fddf6b52f820ce91ad024c9a9aecefcc58523533
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or unwanted content distribution. No scripts were extracted, but the sheer volume of linked PDFs suggests a coordinated effort to redirect users.

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://cxleadership.com/uploads/1/3/0/3/130323322/c157daec.pdf
    • http://mychinesewatch.com/uploads/1/3/0/4/130483376/838408.pdf
    • http://mishmashthefunshop.com/uploads/1/3/0/3/130313368/vubakemurod_susijepo_vulez.pdf
    • http://relief-at-hand.com/uploads/1/3/0/2/130288383/5336539.pdf
    • http://momentumwomenscenter.com/uploads/1/3/0/4/130476649/8abb6c4925bf.pdf
    • http://barkleypet.com/uploads/1/3/0/6/130621082/3309d3846bf7.pdf
    • http://moldremovaltarzana.org/uploads/1/3/0/4/130483650/23162.pdf
    • http://modo.sportcarmoney.pw/uploads/2020/01/28/8190115.pdf
    • http://netflixcenterhelpid812.com/uploads/1/3/0/2/130270900/dexavimaduwavagi.pdf
    • http://brownestonetravel.info/uploads/1/3/0/6/130621196/keket-muruwunexon-zixosamexezoj.pdf
    • http://michaudwellness.com/uploads/1/3/0/7/130776381/130776381.html#bootes+convergencia+informatica
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001341.bin
85bdee90037b90a661ca6aca7ac38f5cd4efdace0faaf548abcbb0ad02a20402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1341 10448 bytes
font_01_sfnt_off00007fe2.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE2 2652 bytes

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