Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30f64c9e3b04239…

MALICIOUS

PDF

73.1 KB Created: 2021-06-02 07:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f070939666d5cd0163dc0a3a488c859f SHA-1: 1a08f540603a7526f248d00c6837a89d938fb74f SHA-256: b30f64c9e3b04239fcee1ab32ddc7de56a8abd25347d4c3d0c9ee6ef97a0a065
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one prominent URL pointing to a site offering a 'norma iso 9001 versao 2020 completa pdf gratis'. This suggests a phishing or scam attempt, leveraging a seemingly legitimate document title to entice users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pistant.ru/pbw?utm_term=norma+iso+9001+vers%25C3%25A3o+2020+completa+pdf+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470532/normal_606e7365a5289.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcdf7035f48f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489247/normal_5fe77e7f78599.pdfIn PDF document text
    • https://jusisobopat.weebly.com/uploads/1/3/4/3/134326654/1605226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498883/normal_603ac9092349d.pdfIn PDF document text
    • https://numibogag.weebly.com/uploads/1/3/4/3/134323011/komijabomin.pdfIn PDF document text
    • https://nepufetok.weebly.com/uploads/1/3/1/4/131438640/c2de774525fbe.pdfIn PDF document text
    • https://wadewasugidaf.weebly.com/uploads/1/3/0/7/130775384/75b106cf96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7069c8e-dd7c-4a7d-bad8-2b1caa685317/2005_jeep_grand_cherokee_laredo_transmission_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5a9225-4e0f-4f30-b8b0-767d4201db01/raxatodifi.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/w/file/fetch/144416496/verbs_worksheet_for_2nd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b66c0e-b2a9-44a3-a47b-fbf5164b5344/zinunokujiborizatamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9049c29b-59e3-4738-aee7-27a7b223b8c6/weather_worksheets_for_preschool.pdfIn PDF document text
    • http://pimepovume.pbworks.com/w/file/fetch/144480711/55023103136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fdff03-79b0-4ec0-8fcb-5868c69e2908/left_behind_series_in_order_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a9c02fc-0b57-471c-a1ca-0e3c2b349516/rimejixale.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_off0000dad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD8 6304 bytes
SHA-256: efdda56e4b4149f208a078f3fc0a4e549c125bc1c072a5283573083e4ebfbde8
font_01_sfnt_off0000efad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAD 12272 bytes
SHA-256: 3c387632945ff54ffdc1ebf4db83f32fb4b13912f3a5ccaf8c7886f7fe74d89d

Open this report in the interactive analyzer, or submit your own file for analysis.