Malicious PDF — malware analysis report

Static analysis result for SHA-256 6994b8a2dab9ebf7…

MALICIOUS

PDF

75.1 KB Created: 2021-02-18 12:03:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: edc93a624a3524c4e64858454f7c6969 SHA-1: 088db66656e83fb9ce01147c6af61d258990f2de SHA-256: 6994b8a2dab9ebf7e394189ef59c5a8482ce4bf161c52e2620883a7d6dedcb99
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one identified as a known malicious redirector. The primary attack pattern observed is the redirection of users to external, potentially malicious websites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded links suggest a phishing lure.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/strik?utm_term=can+sunsetter+awnings+be+roof+mounted In PDF document text
    • https://static.s123-cdn-static.com/uploads/4485176/normal_5fe0e28cbebc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447086/normal_5ffddd5eb430d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488804/normal_6014abdf1cc51.pdfIn PDF document text
    • http://shtancircul.site/abbots_langley_school_uniformp4ijb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474979/normal_5fc7e52262009.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425224/normal_5fcc7194458e1.pdfIn PDF document text
    • http://digitalmicroteter.xyz/vidojagivutokojiridurabib57xjg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_602313ef69a46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459794/normal_5ff2f0bcd5bdf.pdfIn PDF document text
    • http://citrus-fruit.space/62756346930ndir7.pdfIn PDF document text
    • https://jigotofobab.weebly.com/uploads/1/3/5/3/135300724/0abe4a61e.pdfIn PDF document text
    • http://ludshop.xyz/69287976358gxmip.pdfIn PDF document text
    • https://mimuromujalu.weebly.com/uploads/1/3/0/7/130739347/nuvefapamiterez_beteruvufaj_rofevexulem_podifajerow.pdfIn PDF document text
    • https://xufefizomuziz.weebly.com/uploads/1/3/5/3/135346589/4648885.pdfIn PDF document text
    • http://powerhdniy.space/la_liste_de_schindler_cast4e66f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366324/normal_5ff5e7ea0c27a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 5332 bytes
SHA-256: 16271c1023feb98bad3f832526366fdd52090c15baa0d9df45f6aac08c9bdea7
font_01_sfnt_off0000f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95C 11000 bytes
SHA-256: 72e8dc9170590f99f1b4ee4367316c159b71d21591d9c1790621f681b70b2835

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