Malicious PDF — malware analysis report

Static analysis result for SHA-256 748fdf72611eb3f1…

MALICIOUS

PDF

205.0 KB Created: 2021-02-16 22:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 92573fb7d4bf31a1942fbae4974eeb6a SHA-1: 952a0e873caf689425b506d8228498239d119967 SHA-256: 748fdf72611eb3f1a787d3a6e4ca9913fe01ccde589b5ca3960c160b2a5ed1b7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, leads to a malicious domain. This domain is presented with a search query related to a Dell driver, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://jottigo.ru/strik?utm_term=dell+optiplex+7010+universal+serial+bus+controller+driver PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5fd39c5ee8c46.pdfIn PDF document text
    • http://nowojikowelox.iblogger.org/acetoacetic_ester_synthesis_mechanism.pdfIn PDF document text
    • http://trenketo.buzz/kidogukegabozeznzj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406501/normal_5fd8529ad6b5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_601dc76bea0c1.pdfIn PDF document text
    • http://gazzsheff.xyz/siviwejopidiqa2t1.pdfIn PDF document text
    • http://givepamodugag.22web.org/32173951145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_601bcd3c1c857.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/mizeteb/cerebro_y_creatividad.pdfIn PDF document text
    • http://dojiseb.epizy.com/celine_dion_titanic_video.pdfIn PDF document text
    • http://zulexesovo.epizy.com/zepogif.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/nofekukisaxasekukelebizid.pdfIn PDF document text
    • http://ritikaju.epizy.com/whatsapp_plus_2019_atualizado_uptodown.pdfIn PDF document text
    • http://pamegapag.epizy.com/foxtel_tv_guide_showcase_2.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/combine_and_split_files_free.pdfIn PDF document text
    • http://volitig.rf.gd/beaconsfield_school_ofsted_report.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_off0002eee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEE0 5608 bytes
SHA-256: 3e785f8ac8194cecf46295a3dd05a0e1666e6b3576e74a2c4f4fda8af1a02894
font_01_sfnt_off00030209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30209 10504 bytes
SHA-256: 8464a640dd79528889928f5c55b4708c81338d3357b287bdc38b5a0cf25caf93

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