Malicious PDF — malware analysis report

Static analysis result for SHA-256 06df0364b4904c7e…

MALICIOUS

PDF

68.6 KB Created: 2021-02-08 14:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a30d8ac0d7d134846960d71aade7f42f SHA-1: 4fe4a18c2a3572683961228ede08bd281e384cb7 SHA-256: 06df0364b4904c7eca0916934f9b9e20ee5b64f9bf6ffdbf28279b1aca2ee898
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect users to potentially harmful websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://seumenha.ru/wb?keyword=anasarca%20treatment%20pdf PDF link annotation
    • http://help-bluebadgecustomer.com/96871138021q04te.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/3KijpJA/learn_easy_ballet._online_dance_classes_free.pdfIn PDF document text
    • https://rikodobuged.weebly.com/uploads/1/3/1/6/131606346/19a4c241c.pdfIn PDF document text
    • https://rilulozopofebu.weebly.com/uploads/1/3/1/4/131406258/xedebudexa.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/hjcCqGA/crazy_shaved_hair.pdfIn PDF document text
    • http://hotsales-com.xyz/basketball_double_clutch_layupqn9ya.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/gIvijET/download_hovercraft_build_fly_retry_mod_apk.pdfIn PDF document text
    • http://auth02mobility.com/10335287808fjipb.pdfIn PDF document text
    • https://danivuzi.weebly.com/uploads/1/3/2/6/132681213/dapikewurokes-nikegiji-suvegudofixig.pdfIn PDF document text
    • http://sportplays.ru/68999769507nf74b.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/sojenozap/29467587076.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/ergonomic_assessment_report_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/days_of_the_week_in_french.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/authorized_representative_form_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/bawimodi.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_off0000cc52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC52 5260 bytes
SHA-256: 7fabe4560cdf1f005b704a84c3bca2f4fb5287d1c5dd38974fe6f32b282ff0bb
font_01_sfnt_off0000de1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1D 12460 bytes
SHA-256: 393d39ac9bc78a9ad61609d245249cd57d74f504b5fb9ad21049b369b152c1ae

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