Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd91fc4a5f22447c…

MALICIOUS

PDF

74.7 KB Created: 2021-02-20 03:51:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7f207b1cf337aab15ba5e043bb52b0f4 SHA-1: 1d1962206a4da6d4c2d04f4bb9f4a7063f113424 SHA-256: cd91fc4a5f22447c1c28e92537a5fedcafd65154e1e9700d06e24ffefedf8d50
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website seemingly related to '10 meter antenna mast' search queries, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI and the high confidence scores suggest a phishing attack.

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://leonvi.ru/wix?keyword=10+meter+antenna+mast PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418570/normal_600591802b6f3.pdfIn PDF document text
    • https://jarofuzaduse.weebly.com/uploads/1/3/4/5/134502270/batuxaz-radese.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416495/normal_6025a50b9e86a.pdfIn PDF document text
    • http://dmdmassage.com/ziromifowiligt83qh.pdfIn PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/1999580.pdfIn PDF document text
    • https://vujafufitagizej.weebly.com/uploads/1/3/2/6/132696128/mufefaragivodum-potopisifu.pdfIn PDF document text
    • http://znatural.space/tunivifarog3wal6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479904/normal_5ffc7673b4489.pdfIn PDF document text
    • http://callup.today/11_minutos_descargar_libro_gratisr3i90.pdfIn PDF document text
    • https://bisojobiregabo.weebly.com/uploads/1/3/4/5/134509607/lomezorodalawawokeja.pdfIn PDF document text
    • http://zdsshop.top/dell_precision_m4700_laptop_release_dateg7jbn.pdfIn PDF document text
    • http://afracheat2.xyz/dowodotagidobebexal7goa.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/2544012.pdfIn PDF document text
    • http://ecoservice-vlad.ru/castlevania_rondo_of_blood_soundtracktwch2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/janodojivi/amsterdam_mappa.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/dance_practice_boombayah.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/javaxemulesevesi.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/wubaxesumosupifowa.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_off0000eaac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAC 4896 bytes
SHA-256: b8742b0e8de854816ca3c0d3c9b98fa60b25c0cfa7ddde94b0255fb1768ea5e2
font_01_sfnt_off0000fb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB38 10016 bytes
SHA-256: 3ae28dedbc12f96eedd8d1f4a0dba879c0d10e5e97731996c0eb970b37fa1639

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