Malicious PDF — malware analysis report

Static analysis result for SHA-256 22eb4c4b8d814af7…

MALICIOUS

PDF

71.1 KB Created: 2021-02-18 11:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 420f51ab8b43bb472bfde6b553aa5f7f SHA-1: 7e98a2f2ea7b894119727ba6b3fd3c94b11747f2 SHA-256: 22eb4c4b8d814af78a89839951aac3eae651f3d7642715c72e5b1d8ef0b9018d
76 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's an SEO redirector for phishing, using a lure related to a book title to entice downloads. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing attempt designed to lead the user to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://bologen.ru/wix?keyword=ingersoll+lockwood+baron+trump%2527s+marvellous+underground+journey+pdf PDF link annotation
    • https://cdn.sqhk.co/zonelatu/Gjajgji/amazon_golf_shoes_ecco.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410986/normal_5fee9f940d444.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/jd1LzPR/9357269520.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/NRfjflI/wumevopulumu.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/fhbgh4p/key_leadership_skills_and_abilities.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487897/normal_5ffbfb33ea895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408180/normal_5fd04bb8223f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5fcedf4b8df44.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/datarofapakil/98525413222.pdfIn PDF document text
    • http://bojilukirifep.rf.gd/82171679272.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/how_an_open_heart_surgery_is_performed.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/bewenazexitilika.pdfIn PDF document text
    • http://kixavukuwowaz.rf.gd/cholesterol_levels_uk_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/aakasamantha_movie_video_songs.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_off0000d687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 5980 bytes
SHA-256: a5e953a5aa4bc41bffcac9270f03ce00c65e60fb1d3ce9c018c9cf7d823e3de2
font_01_sfnt_off0000eafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFE 10552 bytes
SHA-256: 090898077ee1385869e105a9b4950fd190f06436563d6201b5a301328500cbf5