Malicious PDF — malware analysis report

Static analysis result for SHA-256 4937666179936268…

MALICIOUS

PDF

47.7 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 9e91b90b9e659ed61bf0525c3386b5f3 SHA-1: 23617d80f0478a368ec92efe906956d554f997ee SHA-256: 4937666179936268962bfbf2c0aa1991d91fe0eda2d61efe39e0e63da78baf72
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or SEO abuse. No scripts were extracted, but the sheer volume of external links points to a coordinated effort to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://smimarketingservices.com/uploads/1/3/0/5/130545021/vavunadoxaj-liwefeguziwam-xorekojepu-sojufomukut.pdf In PDF document text
    • http://5thousandcleaningservices.ca/uploads/1/3/0/5/130539048/4575715.pdfIn PDF document text
    • http://3rivers.com.au/uploads/1/3/0/5/130541103/kikukubuvogo-vapemu-tawaza-tekunem.pdfIn PDF document text
    • http://posoutcomes4health.com/uploads/1/3/0/5/130539105/foronixiravudizi.pdfIn PDF document text
    • http://www.epiccollegeconsulting.com/uploads/1/3/0/7/130740617/pegifipuxo.pdfIn PDF document text
    • http://skinofficial.shop/uploads/1/3/0/7/130740250/1274628.pdfIn PDF document text
    • http://meridianspire.com/uploads/1/3/0/2/130270826/dowimomopumerit.pdfIn PDF document text
    • http://gyronav.com/uploads/1/3/0/6/130621503/a54c1dd9e594.pdfIn PDF document text
    • http://vikingappliancerepair.net/uploads/1/3/0/4/130436093/febineralovudituj.pdfIn PDF document text
    • http://solanii.com/uploads/1/3/0/7/130738949/wujumamobepuxif.pdfIn PDF document text
    • http://beatsbytheharv.com/uploads/1/3/0/4/130435982/dawadawiz.pdfIn PDF document text
    • http://theodorefeldmann.net/uploads/1/3/0/5/130550696/wesumivuv.pdfIn PDF document text
    • http://noahcaseycounselling.com/uploads/1/3/0/3/130379315/lowuwe.pdfIn PDF document text
    • http://dragonscalepublishing.com/uploads/1/3/0/5/130588503/dubuwigije.pdfIn PDF document text
    • http://appleridgedaycare.com/uploads/1/3/0/4/130435751/393de32ae.pdfIn PDF document text
    • http://vitaliswellness.com/uploads/1/3/0/7/130739301/patipevadugug_tujedezo_jubumaji.pdfIn PDF document text
    • http://artsanimalsandawakenings.com/uploads/1/3/0/3/130323227/lomubaziki.pdfIn PDF document text
    • http://village-life.com/uploads/1/3/0/7/130775156/f590416566a9212.pdfIn PDF document text
    • http://mail.acesonpoint.com/uploads/1/3/0/4/130483957/sawotebijuv.pdfIn PDF document text
    • http://nelslehtinen.com/uploads/1/3/0/5/130588452/6c7dc48e3.pdfIn PDF document text
    • http://theselfishparents.com/uploads/1/3/0/2/130273931/jadapotuz.pdfIn PDF document text
    • http://www.charlotteshope.net/uploads/1/3/0/9/130969616/aed1443.pdfIn PDF document text
    • http://litigatingforchange.org/uploads/1/3/0/5/130588846/gifijesibozetuw.pdfIn PDF document text
    • http://bearvbaby.net/uploads/1/3/0/8/130813731/3420657.pdfIn PDF document text
    • http://m-almanac.org/uploads/1/3/0/5/130544191/wunafizef-muwibiwobaju.pdfIn PDF document text
    • http://webdisk.jhigh18.com/uploads/1/3/0/5/130542907/130542907.html#absorcion+de+los+lipidos+en+rumiantesIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58 8808 bytes
SHA-256: 872be8fdd7a6e2f636c8bf3a56438e315a5397636455398f0203abff83baad61

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