Malicious PDF — malware analysis report

Static analysis result for SHA-256 582be9dfd26b8416…

MALICIOUS

PDF

299.2 KB Created: 2021-04-27 10:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6526f616c544533b5d73b50d59633bf SHA-1: 28742cc1830f1e6e41c7cbec03f100964971f724 SHA-256: 582be9dfd26b8416dc0c7bacec9d08cafcb250c95795cd6a73c47a303f185699
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • 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.
  • 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://dafemum.ru/strik?utm_term=dnd+5e+is+unearthed+arcana+official In PDF document text
    • http://fawaxifiwuzodil.scienceontheweb.net/meaning_of_self_esteem.pdfIn PDF document text
    • https://cdn.sqhk.co/dagidomu/ZhfPZKL/communication_skills_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/dKgfjbd/30270808901.pdfIn PDF document text
    • https://cdn.sqhk.co/todusukiraxi/QjjjhBf/4890826370.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/ewgcicH/69232115118.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/haJhAOX/63609124996.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8577ce5-f9c6-45e4-828d-aedb40522815/why_is_my_dishwasher_not_draining_all_the_way.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fea2cbc-4128-4c1f-aaac-043932b58159/libro_cosmos_de_carl_sagan_gratis.pdfIn PDF document text
    • https://b5f62e6e-b620-4b0e-90dd-fa81fc7fb5c2.filesusr.com/ugd/18d815_0e920ae6e1d9484081b9959702ff9c90.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/962d9406-6d17-4f61-b520-173d71cafa18/maze_runner_the_death_cure_trailer_4runner.pdfIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_89049558a2ef4463aa8fb49dbe143894.pdf?index=trueIn PDF document text
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_776217584d7544f9af40ed2800d89fea.pdf?index=trueIn PDF document text
    • http://pimimozoji.myartsonline.com/perimortem_cesarean_section.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cce4617-c8c0-41e3-8e89-cfbc63162c84/rixagogevumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6322531-5ca4-4507-bfc7-4e77b2d94b67/wonim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a89df10-d308-42b7-a769-7f49ef490e4f/why_does_my_ge_front_load_washer_keep_pausing.pdfIn PDF document text
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_b5ff92f8d4b7413f89fdee6834a2fdf9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a8e126-f04d-4771-a070-ff2167a4193a/90498764117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd395b0-689b-4086-b229-0d9c3fe3d4e3/wiwuk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000454aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x454AA 3016 bytes
SHA-256: 07efd4b5ce35fe43d562a47bea6ca2be7e52a32f6dbf0d49a2a72276c44a66d1
font_01_sfnt_off00045f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45F65 5232 bytes
SHA-256: 7d7ad3480bdf62156cc6c91c21e0a58137dfe2f616b0c90e5207c6b035733b41
font_02_sfnt_off00047137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47137 13016 bytes
SHA-256: 7d6d41d96aed5851773fa27b0156109f906b44a769b147ac93f09a40b15b6d2b