Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e0a79b21bbb7c5…

MALICIOUS

PDF

63.1 KB Created: 2020-12-11 15:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7380b44d0e818ea061b798d10b337ab7 SHA-1: 3ad9dcd3feb844828d590058159536a8209bd488 SHA-256: b5e0a79b21bbb7c5734eb01f042077dd16266fdbd43d6eebacb08d0473a303d5
202 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a malicious redirector link disguised as a download button, aiming to lure users to a potentially harmful website. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of a phishing or malware distribution scheme.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffmen.ru/aws?utm_term=macmillan+practice+online+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4458849/normal_5fa6a96ac55af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448551/normal_5fc9a4c329789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_5f8ef3bd126cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8cccaeb7f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f96712034332.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418001/normal_5fc61a98787ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fc6120dbcf3f.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/sevoga/asian_black_chicken_hen_vs_rooster.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5533cd26ff1194f914669/t/5fc6ab5561e25426e123b105/1606855510888/zombie_hunter_king_mod_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/065400c4-4bdf-4849-82ca-c0d0b87aa88a/sazevaxomuterifewulozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/399ee247-349a-4374-83a9-2cec3d22a516/physics_principles_and_problems_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/708df4ab-f84e-4114-b315-901a4be1664b/gizap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bc7af4-d491-4b0d-af95-ad76c5be0d2e/zucchini_cornbread_pie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d408e97a-ee55-4c67-9b8b-3fa58da12b40/83890587936.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_off0000ba8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA8C 5176 bytes
SHA-256: b45785931bd0cb0cf4f82d74065b80ac11514f43a79737f6080e7b9ab628a82f
font_01_sfnt_off0000cc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC29 10456 bytes
SHA-256: 6ef8a69f65b0695c3795d6e584c356467be2609ae2d1277c9aeed2b4e1ddac48

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