Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46bc979faa69858…

MALICIOUS

PDF

99.9 KB Created: 2021-05-02 00:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28fd61b9b1eb972df273edce302490fd SHA-1: 5c7b0f79644d113d268c07bc77f92ad1d7cc4dcc SHA-256: e46bc979faa698584e00c66669efb44192f5830a646682b1c2e8b4c5a7dec067
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, disguised with a seemingly innocuous topic about stairlift maintenance. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, which is a common tactic for initial compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=how+to+maintain+a+stairlift
    • http://gudutisiluzew.mypressonline.com/5882610825.pdf
    • http://gunonoxuketevel.22web.org/20876761302.pdf
    • http://jukejed.mypressonline.com/dna_fragment_analysis_by_capillary_electrophoresis.pdf
    • http://sefobadivura.iblogger.org/buwiwenijasovarinatavuzu.pdf
    • http://xupulakikovuxo.mypressonline.com/79571337501.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d53f4373-a38e-4976-8b5e-f9bd05b520a7/japefodovorawekosu.pdf
    • http://kuwukazisopof.rf.gd/afternotes_on_numerical_analysis.pdf
    • http://vevojadiren.epizy.com/melokaretelabepiz.pdf
    • http://zexubuwebujuk.rf.gd/37966649720.pdf
    • http://kipinoda.rf.gd/runitiroruwowevir.pdf
    • http://walazej.rf.gd/el_poder_curativo_de_la_cbala.pdf
    • https://uploads.strikinglycdn.com/files/a94ded33-9867-45f8-a67c-125c2dd169a5/72534816847.pdf
    • https://058da8ce-bb30-4b8c-81eb-8903018cac65.filesusr.com/ugd/ab745b_8982d5b97bf04c01b16aa9e2882afcac.pdf?index=true
    • https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_6d6f8bdf384a49a391be41baa8f54056.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2f2c672a-7f1b-4aa0-9e97-5e1e084cdd58/sewekomaxo.pdf
    • http://vigexosav.myartsonline.com/microscopio_optico_de_campo_claro.pdf
    • https://uploads.strikinglycdn.com/files/95404f0d-f6a2-4cf9-b1cd-60596966bb40/63245360258.pdf
    • http://vizawenep.epizy.com/fatogabugiretuserep.pdf
    • http://kafogateginoni.epizy.com/buber.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014c19.bin
87bcd51003927146b8fe744391de31fe4ae0e440e30f6d2a40ac993c74c512f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C19 4964 bytes
font_01_sfnt_off00015cef.bin
2d0b523a2023ac9b698bf98ee6346243c3c2ae93799467b5250e3754e68f52a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CEF 11208 bytes

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