Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b206bda74a5c6d2…

MALICIOUS

PDF

53.1 KB Created: 2020-11-01 12:33:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f2bcaef498097cca803cb335f94d17ee SHA-1: b28bee46350473cc395821f527866a9f19015d45 SHA-256: 2b206bda74a5c6d21e80030c2cebda6c62b6f58354f48682dc158305132bf13c
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/strik?keyword=navy+enlisted+ranks+chart+emblems In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f896d51bfc35.pdfIn PDF document text
    • https://vapufubewadul.weebly.com/uploads/1/3/4/4/134485241/9281913.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/4dfd8590-d0f1-448a-8f2e-d2e8309dd75d/reglas_de_inferencia_y_equivalencia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff2b416d-4fbb-4691-8eb1-04fb6b44406b/rozibixese.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/29497468308.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/best_miter_compound_saw.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/automation_control_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ae29746-4507-46d8-ab77-0e92561475a2/88670327963.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/noxafexujoje.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/sterling_kia_lafayette_louisiana.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/xivenuvipipan.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_off0000907b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907B 5516 bytes
SHA-256: 1df3713417015fa1dd4a07c8166d6f537238fa247b3a62b9ab4c8c501782018e
font_01_sfnt_off0000a321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA321 10612 bytes
SHA-256: f667297a8650bf7f787b9882afbeddedb300f6bd5a19014090627bee6e977d1d

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