Malicious PDF — malware analysis report

Static analysis result for SHA-256 191f4ebade7fafa0…

MALICIOUS

PDF

68.6 KB Created: 2020-11-23 13:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: bf7ef604cb2a48f17aecf12053103417 SHA-1: e3c96a1a783e7ce3bec67d5a7ad2439c85120fa7 SHA-256: 191f4ebade7fafa07e66ca53ef4c0bad952dafcbdbc7f78785be74cd0207f553
254 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
  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=rain+bird+esp+modular In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f90861606ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5fa4e29139dc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f9118526fb2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5f8a5b40c7104.pdfIn PDF document text
    • https://zewonawexekuke.weebly.com/uploads/1/3/4/3/134318694/wuwuzagof.pdfIn PDF document text
    • https://kafigibedup.weebly.com/uploads/1/3/4/4/134479504/1ab4d8da.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/laranesaxuxipa-pawaridoji-gavawamudo-ribubidet.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/vavebufevodutob/all_html_attributes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97691446-ee1a-43a7-a1d9-fedf0397cb6e/pekupozebepawukudajev.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/femiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76087e85-7d67-4600-9983-5eb7717d1a09/pebaxodawujizaluzof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9cf46c-7378-4b05-945a-e97908bc814e/occam_marketing_services.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_off0000d0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C2 5252 bytes
SHA-256: e229c119b45af284f1a20dae136b1b9afdd2a8d88f9cc17f5bc294847a039636
font_01_sfnt_off0000e280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE280 10544 bytes
SHA-256: 1255624e2aa6bb620dfc5a87847a9748cb917b5ad1217893fbd44cc05eab12ab

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