Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fd8e2b3614b3d8…

MALICIOUS

PDF

85.1 KB Created: 2021-04-09 07:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0226b6655263688bd339efa09b425d75 SHA-1: 701c2aab4a0061bf1a86364db2378b27728dd87b SHA-256: 45fd8e2b3614b3d87e7924fb826c4e0d2080d66296805e607a7ad8182f092374
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and exhibiting link farm characteristics, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://zajinet.ru/strik?utm_term=innova+multimeter+3320a PDF link annotation
    • http://vipadminler.org/the_collector_book_summaryfudmw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490138/normal_5ff527d3f161d.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/Tgejgif/miweluluzizijogezar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_604344ef0e496.pdfIn PDF document text
    • http://remont-pc.website/30336950441aje06.pdfIn PDF document text
    • http://naligixe.getenjoyment.net/business_process_modeling_example.pdfIn PDF document text
    • https://cdn.sqhk.co/gafazakedoki/jiDXwgg/block_puzzle_jewel_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/ncG6heu/19104360981.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485703/normal_60321522302cc.pdfIn PDF document text
    • http://zijafanovidiz.sportsontheweb.net/vopafisenizeme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490367/normal_60476a2419988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449622/normal_604a3f7092555.pdfIn PDF document text
    • http://helpverifedbadges.com/dativunofujusidefu0f1eu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_601aa2f1ae88c.pdfIn PDF document text
    • http://tuduvodakep.mypressonline.com/dinebupiv.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/4968a136-1106-4b4a-8595-9a0add611053/gekufib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826dc4d8-bebf-4ab6-86d8-ccf46e1be5c1/5th_grade_geometry_worksheets_free_printable.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/texas_instruments_ti_30xa_scientific_notation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efaad9b7-748d-48ef-8b03-0c31ddfbe932/ruletobofuwarudefif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97cb7b24-9ef8-4a7f-a3cd-1fc8566932c0/87771249652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b056f006-38db-413d-ae4f-566eba8e6e46/48515014543.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F0 5088 bytes
SHA-256: 74ef822cd885159fd824ddb8e2df6594c33f19d119e405495c8b4f1527b7decb
font_01_sfnt_off0001232c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232C 10548 bytes
SHA-256: 96269c9277e8e6a3826b9b65d6ac77bd5e2368450f761faa6be501de2364b0bd

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