Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b365cc22baea9e9…

MALICIOUS

PDF

67.8 KB Created: 2021-01-06 13:52:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 83c35784588c35e36b6a8c695fffadc9 SHA-1: 056f764c8ac558b022a1d7475dce1fdd3a9b7ed0 SHA-256: 2b365cc22baea9e9548637c84d7fd2c8c9d6509ab8d07a977fb3502b991dd074
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link disguised as a 'Maurices return policy covid' update, which is a common phishing lure. The link points to a known malicious redirector infrastructure, indicating an attempt to lead the user to a malicious site for credential harvesting or malware delivery. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/123?utm_term=maurices+return+policy+covid In PDF document text
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5feb7c68b97ea.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/a1f7669d-0c20-4674-8f22-dc4aebaadae0/27408914495.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/yeh_bansuri_wale_ki_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b261bf-0258-4c95-a935-440cc0ce7e09/noxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ca9f00-1666-417a-ab72-543224968ccf/38022127890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0a0341-e612-4571-9389-68a1b52bc8a0/mesele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05838070-5788-4ea0-b3f0-5a095fd8dec2/fusojigobafezaxexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf16f6f3-e2e3-4df0-a183-250df295d957/67807012735.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/michel_foucault_archeology_of_knowledge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de9f8a6-3f4b-4a62-aef6-655f6740e002/download_devil_ninja_2_mission_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4719f548-4c9d-4b80-bbd6-14fb22958a3f/vox_cinema_uae_coming_soon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ad6a73-73b6-4227-881f-b25cf5a44cdb/mogitawit.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_off0000cccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCB 5232 bytes
SHA-256: 98d9893c37fe177743fdf32259dd433b7bcdb860ce5f8abead272e8c48a5c82b
font_01_sfnt_off0000debd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBD 10588 bytes
SHA-256: cf6237786e224e7582091aee71b991b39b4092533448abd00d46775d26a9f1c3

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