Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14e1971ce11b67a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-24 16:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 024caf8a05f63b054b5e62fcad22309d SHA-1: ee9d3601a5962a97538e5b88bbca3676db43f256 SHA-256: e14e1971ce11b67a9f9cfbf44c0f20e5f1c4522d463411d19b96edc75ac05717
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic and the presence of numerous external URLs suggest the document is designed to redirect users to potentially malicious websites. The embedded URLs, such as https://ponafet.ru/aws?utm_term=oster+pro+1200+plus+food+processor+parts, are likely part of a phishing or malware distribution scheme.

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://ponafet.ru/aws?utm_term=oster+pro+1200+plus+food+processor+parts PDF link annotation
    • http://nominasacra.ru/994353674842u4xn.pdfIn PDF document text
    • http://onatural.space/microeconomics_class_12_cbseakx4b.pdfIn PDF document text
    • http://jaxotibovafel.iblogger.org/sikiwirobok.pdfIn PDF document text
    • http://latuha.com/brushless_alternator_seminar_reportva2sz.pdfIn PDF document text
    • http://cesaregaspari.com/ninja_professional_blender_replacement_parts9mm6i.pdfIn PDF document text
    • http://jolixasij.sportsontheweb.net/kubota_l3130_parts_manual.pdfIn PDF document text
    • http://xexogafuko.22web.org/84336345971.pdfIn PDF document text
    • http://bamiluzigu.mygamesonline.org/48572326362.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://witokufufozu.rf.gd/computer_systems_institute_student_portal.pdfIn PDF document text
    • http://pigutun.myartsonline.com/96740453647.pdfIn PDF document text
    • http://sawokemapixaf.epizy.com/sociology_book_class_12_ncert.pdfIn PDF document text
    • http://koxujitedosu.epizy.com/rita_mulcahy_project_management_book.pdfIn PDF document text
    • http://dunupilopun.epizy.com/13789469757.pdfIn PDF document text
    • http://tavupikegoseri.epizy.com/nut_bolt_weight_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffd01f5-cd4c-471f-8edf-12d898062e3f/96474600198.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/88182467958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d846e70-b441-45a1-9f08-0261f9b2603d/mnps_payroll_calendar_2020-21.pdfIn PDF document text
    • http://mukonedes.epizy.com/negifu.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_off0000fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 5500 bytes
SHA-256: 9a30449096c88cc0e3f4e9f205d9e5bb193cb13f815c85b101888ce73ed3df2e
font_01_sfnt_off00010e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E13 10952 bytes
SHA-256: 2d36e0fc75f77f6de9318d640ab05a21279981b77abf2d83232705dbe01c61fb

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