Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8648e823235925…

MALICIOUS

PDF

42.8 KB Created: 2020-11-01 12:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 49fffc324be50b84a32ed7500074fb8e SHA-1: 97184af94de14f546a096008587b883a267ea084 SHA-256: 5d8648e82323592561efcdeca21a1962c822290278623d7239766bf2d6c8b22c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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?keyword=cozi+tv+fall+schedule+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385026/normal_5f90ecf4cbed2.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/7a877881fe.pdfIn PDF document text
    • https://dunofedipusafo.weebly.com/uploads/1/3/4/4/134477286/soxufumeti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f8bbced42f36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/jutedimagesaxuliva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2133/5189/files/educating_rita_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec37d3e-9d25-40e5-9eb5-de2c97ca44be/gavife.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/44216849191.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/javascript_bangla_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/cytology_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/ryobi_table_saw_manual_bts10.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/sejuzipej.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_off000068a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A1 5304 bytes
SHA-256: 6dbe8cd7212852be93b6795e2961ee37710f23b14af3356dbe91ae323cd93b03
font_01_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10412 bytes
SHA-256: e543f4728045186fcc1af88a49f50178ad04448b0b0015a621f7fe000f1626aa