Malicious PDF — malware analysis report

Static analysis result for SHA-256 1809665839e764d7…

MALICIOUS

PDF

46.7 KB Authoring application: PDFBox
MD5: 3b67b14e2c685ee8594394390321d7e8 SHA-1: 4ca63ec23bc57e55574ce0a73c336c342ccfcbab SHA-256: 1809665839e764d7c0f08c6314f7460201a69594c73fd9fc43f5ee4676cadd09
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. This technique is often used for SEO manipulation or to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, but the presence of numerous external links suggests a redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://www.textilowcost.com/uploads/1/3/0/4/130478163/083919c7ea61479.pdf
    • http://mundtboutique.com/uploads/1/3/0/6/130621596/5583420.pdf
    • http://calasanzpbavaro.edu.do/uploads/1/3/0/5/130539019/8457669.pdf
    • http://turbogood.com/uploads/1/3/0/7/130738676/2170157.pdf
    • http://cleaningbuddies.com.au/uploads/1/3/0/6/130639998/ruzojupubuzodaxetiti.pdf
    • http://porktexas.com/uploads/1/3/0/5/130589114/9353348.pdf
    • http://lagosjobsite.com/uploads/1/3/0/7/130775339/9921768.pdf
    • http://amazonses.llamasontheloosefarm.com/uploads/1/3/0/8/130874051/vomadomulosu.pdf
    • http://nicole-florio.com/uploads/1/3/0/2/130288363/dapatibebe_sezitivas.pdf
    • http://456fillmore.com/uploads/1/3/0/2/130272415/11927.pdf
    • http://ipv6.gitaarlesdamwoude.nl/uploads/1/3/0/5/130588288/ae4d10f.pdf
    • http://newbraunfelsmasonry.com/uploads/1/3/0/8/130814761/9691672.pdf
    • http://postboxsucks.net/uploads/1/3/0/2/130289629/lenopage-pexijepez-jugogiv-lofonakadaka.pdf
    • http://landonfoundation.org/uploads/1/3/0/5/130543210/f7c57.pdf
    • http://mynaturalplace.org/uploads/1/3/0/5/130588849/626d49abf5350e.pdf
    • http://deyoodesign.com/uploads/1/3/0/6/130620429/7c906c1caff3362.pdf
    • http://martindigitalorgans.com/uploads/1/3/0/6/130639678/xerapipesenama-jevar-sunug.pdf
    • http://spi-cibernetica.com/uploads/1/3/0/4/130435990/2993904.pdf
    • http://nmsapa.com/uploads/1/3/0/2/130271046/boginavopajedazav.pdf
    • http://sochicompany.com/uploads/1/3/0/7/130776113/6569810.pdf
    • http://hostmaster.essexweddingring.com/uploads/1/3/0/7/130776401/ead6c4cffb.pdf
    • http://mommytimeindoorplay.com/uploads/1/3/0/6/130620479/9059967.pdf
    • http://badbirdbreeders.com/uploads/1/3/0/5/130543598/digisikoz-vaximimexuzutef-zogewematojel-zogazuloj.pdf
    • http://2210enterprisedrive.com/uploads/1/3/0/5/130589144/2911409.pdf
    • http://mccarthyspubfethard.com/uploads/1/3/0/5/130539155/2920f0bcdde03a6.pdf
    • http://sanyaduchang.br3h.com/uploads/1/3/0/6/130621359/130621359.html#type+1+diabetes+mellitus+with+ketoacidosis+without+coma+icd+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027de.bin
156775f8e81314c523b0bf8282fd97dc75d477ba0f5cfc0930922df654c8e11b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DE 7048 bytes

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