Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d31737430cd6c99…

MALICIOUS

PDF

38.7 KB Authoring application: Soda PDF
MD5: 3dda098370d541b089ccabb89efc2711 SHA-1: b54e40dfa0f003c575ee2fc9587ec309556605f8 SHA-256: 6d31737430cd6c99a6253523761dc47b479d2bdac3999f0b932bd5068c044eca
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links 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://trios3dlab.com/uploads/1/3/0/6/130621072/6510833.pdf
    • http://springbrookaerospace.com/uploads/1/3/0/7/130776462/61e073ce679.pdf
    • http://www.mcjinmobiliaria.com/uploads/1/3/0/4/130435985/nigemozipokakina.pdf
    • http://streetbrunch.com/uploads/1/3/0/2/130272988/powikezonanuxe-kozuzerifafo.pdf
    • http://paolospazzini.com/uploads/1/3/0/4/130436049/750cc039ae4.pdf
    • http://www.simply-errands.com/uploads/1/3/0/2/130291593/3646706.pdf
    • http://moldalbany.com/uploads/1/3/0/5/130550925/xenijapivuw.pdf
    • http://thesupremeperformanceacademy.com/uploads/1/3/0/7/130776518/xixid.pdf
    • http://visualtrad.com/uploads/1/3/0/8/130874570/sopapapipuxumoso.pdf
    • http://phhlca.org/uploads/1/3/0/7/130739348/datekolajez_relat_riritupajoriru_kupobo.pdf
    • http://milliehoffman.com/uploads/1/3/0/6/130621013/sadefuleno.pdf
    • http://travelreply.com/uploads/1/3/0/5/130543148/34b003fe349.pdf
    • http://wino.club/uploads/1/3/0/6/130604225/6785921.pdf
    • http://rockallyourrelationships.com/uploads/1/3/0/5/130590532/fipogepa.pdf
    • http://ledgrowlightsformarijuana.org/uploads/1/3/0/4/130476853/7855818.pdf
    • http://newholland4wdtractor.com/uploads/1/3/0/4/130489933/gapif.pdf
    • http://cappyphalen.com/uploads/1/3/0/3/130379063/letusu.pdf
    • http://dotsengaged.com/uploads/1/3/0/6/130639849/nupewuso-wuwapu.pdf
    • http://abbie-stout--family.rominastiebenphotography.com/uploads/1/3/0/5/130539428/130539428.html#adenosine+deaminase+ada

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003938.bin
8fb12395b7a0cd8bddaf57b0da1ae62277abff99c2b5db39901354c9845c928f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3938 8004 bytes

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