Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e31482cb48bacce…

MALICIOUS

PDF

67.0 KB Created: 2020-11-25 11:01:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 78f56fb1e77aef0b480931056db66d95 SHA-1: e60f417cd54d55c6ea6ffa820b804e29e6bb012b SHA-256: 4e31482cb48baccebaad856245ccfdca43ed23f52fe52801469cb23a69f13967
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=applied+hydrology+fetter+pdf In PDF document text
    • https://batatifenosi.weebly.com/uploads/1/3/4/5/134513642/xipezodesifoxamezowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f86fabed5d3f.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/0fc523805c7a87.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/mijedusovineti/breatheology_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8ad52cf-ea61-49ef-8e24-2db1a7240b77/pazejofutoneviwu.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/22277526711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7db05519-866f-4b8e-b9cf-2ef7dfc3be1f/81111634605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b1a6f88-a87a-48d8-b610-43aec871cc56/16.1_thermal_energy_and_matter_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e0f439-932d-4d41-851c-221a31acb98c/gear_s3_size_screen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9262e68e-0004-4721-8771-ab4d4768bc7c/factor_label_method_math.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/48552018333.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/20113303610.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/the_fred_factor_story.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_off0000cb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB11 5008 bytes
SHA-256: 778a3127316499383454050a5937cd6ad89278628b01a13e068d69cecb60f435
font_01_sfnt_off0000dc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 10432 bytes
SHA-256: ca265f93c058acd41ca4100c086ea60d0b9add196e1b15c2c8d8def664476d98

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