Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36475dba23bdb32…

MALICIOUS

PDF

52.6 KB Created: 2020-11-09 15:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 484b0e14d4d2cbf555ca85daeaf4dd56 SHA-1: 0254627feaa39381129add58f864d5d818b9e7df SHA-256: e36475dba23bdb328434a808dbe26f27820d45fabd39bdfa9da5055e61c4da5d
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to contain the same malicious URL and references to document content that could be used as a lure. The ML classifier also strongly indicated maliciousness. The primary attack vector is likely spearphishing, with the embedded link serving as the mechanism to deliver the payload.

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://gettraff.ru/aws?keyword=cable+one+tv+guide+long+beach+ms In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f8d5baa92045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f8be450f12bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5f9e1a431badd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414871/normal_5f9de8a0d4063.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/regufojalojaza/58727159969.pdfIn PDF document text
    • https://s3.amazonaws.com/timafatafej/2997522591.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/gastrointestinal_tract_function.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/trig_identities_precalculus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bc1e62-ec24-48b9-ab22-85c511a65257/966200821.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/common_flexor_tendon_elbow_anatomy.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/pdf_to_word_converter_for_arabic_font.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/power_legs_foot_massager_as_seen_on_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f269d29-c199-4784-af0d-18c63f75e91f/89485434936.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_off00008e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E27 5360 bytes
SHA-256: 18f703a816204d14eba7ab613b5f5601036d1dd3d26713b231f03834c1be5d86
font_01_sfnt_off0000a03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03E 11152 bytes
SHA-256: d34ffa809d3ab86eb16f7f0b4ac562a938bd68e3e7fcf3ab20f2685037ab4056

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