Malicious PDF — malware analysis report

Static analysis result for SHA-256 460c17eb0f5a3e1b…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 18:21:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b46a044ae751a9c7d522c9a1d94de1fe SHA-1: ef371c2b2cde0c0e9c4806d07800b5fe94a8132a SHA-256: 460c17eb0f5a3e1b76b20667b4859eea498ceed708708ce4e4bcad2ac8720e72
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • 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://baarspo.ru/wix?keyword=assure+lesson+plan+science PDF link annotation
    • http://shoop-fn.ru/soft_sheets_as_seen_on_tvqm92a.pdfIn PDF document text
    • https://vonepegoparopew.weebly.com/uploads/1/3/4/3/134352316/zugenubumok.pdfIn PDF document text
    • http://rentline.pro/yes_please_meals7kkka.pdfIn PDF document text
    • https://bofejaximolapob.weebly.com/uploads/1/3/4/7/134751884/9838071.pdfIn PDF document text
    • https://sefujokugitexas.weebly.com/uploads/1/3/1/4/131408298/34cbe0.pdfIn PDF document text
    • https://duvigefotazepex.weebly.com/uploads/1/3/0/7/130775674/nepizufo.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/mexuvosikopimojok.pdfIn PDF document text
    • https://mafoxoluz.weebly.com/uploads/1/3/1/4/131483222/lalakevurataw.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/rafiralexezol/daxotumonorapefimekisasu.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/best_apple_music_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/34789693057.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/bemofur.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/canadian_infrastructure_report_card_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/microbial_functional_foods_and_nutraceuticals.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/7968685071.pdfIn PDF document text
    • http://sevezogare.rf.gd/judgement_not_on_your_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/android_9_pie_root.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_off0000e417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE417 4916 bytes
SHA-256: 5f5070040ec5477805a754c2ce2dca7170e9c4593bece1e4690335ae761e38fe
font_01_sfnt_off0000f4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DA 9692 bytes
SHA-256: 26890c8250b92f423bf66ea9a4a920dc7308f85d1565c2a4b34eac9779afe6bb

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