Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ef9123514aba85…

MALICIOUS

PDF

72.4 KB Created: 2021-02-26 20:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ece19c4e85f3ee27c593b7ffe98651bd SHA-1: 6e5e97205c8280967e2c7800c0dac8fb9ba9906a SHA-256: 49ef9123514aba852f6a60155f96c73184019b9a206767573e5cf6cb50283889
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment, flagging the file as malicious. The document body, though partially corrupted, suggests a lure related to a boat motor sale, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://xezojetit.ru/award?keyword=new+9.9+evinrude+outboard+motor+for+sale PDF link annotation
    • https://wuremuzagatixob.weebly.com/uploads/1/3/4/6/134612401/9723656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485442/normal_6019303b7caa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470209/normal_6038e51038940.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468827/normal_5ff95ce5efa54.pdfIn PDF document text
    • http://gikubozudunol.iblogger.org/xelisanasubizoxatise.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370090/normal_5fcf945f48853.pdfIn PDF document text
    • https://bamiwesuwo.weebly.com/uploads/1/3/5/3/135390748/8919898.pdfIn PDF document text
    • https://neverazu.weebly.com/uploads/1/3/4/9/134901342/taziwulejadulujami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jedugapi.epizy.com/suwubinozoxaze.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/15424366721.pdfIn PDF document text
    • http://kiburomuwilun.epizy.com/rarexudegedixevimam.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/limupa.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/87876981422.pdfIn PDF document text
    • http://radagosedapisat.epizy.com/21073671170.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/71813185601.pdfIn PDF document text
    • http://najudugofuk.rf.gd/waguwatujonejiretitawodar.pdfIn PDF document text
    • http://refofigeto.epizy.com/danabudisumebaluxe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF10 5504 bytes
SHA-256: 41351fb45130708744b3bb75acf2f0e6cb486d29dce6fe06933df1c5e10cfa70
font_01_sfnt_off0000f1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D1 10228 bytes
SHA-256: 9aeb97154b060ef10d151f407d1314708ecc59224d104ecf0a339992a9e3aee3