Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d47bfba17beecf6…

MALICIOUS

PDF

73.5 KB Created: 2021-02-19 22:51:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6a0cfa0e09a1cfce3782cc3766046372 SHA-1: 45b85206a1baba14c3b866a64a6094cc55d8208a SHA-256: 2d47bfba17beecf6ed23b16a35cde3cb22e8bffd8260938899603d17a26bbabb
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. This suggests the document is designed to lead users to malicious websites, potentially for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=1989+ford+mustang+gt+for+sale+in+houston In PDF document text
    • https://mazanotofubemiz.weebly.com/uploads/1/3/2/6/132681192/guratamupurolesedu.pdfIn PDF document text
    • http://republvinb.fun/biblioteca_nacional_de_francia_plataforma_arquitectura9vewg.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/wijipusuri-zotufer-nisoxepodosulog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_6005d31fc6405.pdfIn PDF document text
    • https://lafadulow.weebly.com/uploads/1/3/4/5/134591129/bopijusogawitawazoj.pdfIn PDF document text
    • https://xopubuniwanofu.weebly.com/uploads/1/3/4/1/134131716/ddefbabaf73421f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418781/normal_6014b0ff04efa.pdfIn PDF document text
    • https://zunitaxipef.weebly.com/uploads/1/3/1/3/131398356/xojoxomotupidal_sepom_gigoras.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451353/normal_5fe0fccd1506b.pdfIn PDF document text
    • http://webmastervlad.ru/jifujevqr2dm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5fe2582e54492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_602b4d2da0d55.pdfIn PDF document text
    • http://macsk.space/vulemepomiduposidogikexojtsr20.pdfIn PDF document text
    • http://4338bacchus.com/pufodeteripatodajakibela0sshm.pdfIn PDF document text
    • http://habercigo.com/iso_14001_internal_audit_checklist0hbiv.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_off0000e0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 5628 bytes
SHA-256: 64b8ce39c7fb73a610c4153c59e94f6574dd5588a6b06da5227acead96da1f65
font_01_sfnt_off0000f3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D8 10700 bytes
SHA-256: 18911f9b0255f8a8ff4211ea33bab4b71915d8666e052be852e5c6a388c170f7

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