Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe806537b32429c…

MALICIOUS

PDF

66.5 KB Created: 2021-02-18 08:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: bf5fb10a59865986f19f5fb1a816a4a7 SHA-1: 38bca74d5ea9dacd93f4d28aae5022b69abec303 SHA-256: afe806537b32429c05d5c67e0c172a250cc12f2183450f6738cef5a436666699
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting services, indicating a link farm or SEO spamming operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of techniques used to redirect users to malicious sites.

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
  • 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.
  • 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://druttle.ru/strik?utm_term=delta+tribeca+4+in+1+crib-white+and+gray PDF link annotation
    • https://pofitefe.weebly.com/uploads/1/3/4/6/134617546/wozilinifapojij.pdfIn PDF document text
    • https://dikubudekoguzo.weebly.com/uploads/1/3/1/8/131857294/5fed27189.pdfIn PDF document text
    • https://filikegepux.weebly.com/uploads/1/3/5/3/135346592/1490862.pdfIn PDF document text
    • https://digikugububim.weebly.com/uploads/1/3/0/7/130774990/3614289.pdfIn PDF document text
    • https://xoxopurotawasuj.weebly.com/uploads/1/3/4/6/134651309/315350.pdfIn PDF document text
    • https://kaguleturega.weebly.com/uploads/1/3/4/9/134904612/mijopa-dojurirugebi.pdfIn PDF document text
    • https://bunutawopuzo.weebly.com/uploads/1/3/4/8/134868528/fafid.pdfIn PDF document text
    • https://viduxetejogat.weebly.com/uploads/1/3/4/6/134600114/niguninibifib.pdfIn PDF document text
    • https://sugelama.weebly.com/uploads/1/3/4/8/134898925/5312268.pdfIn PDF document text
    • https://piwaxokireruber.weebly.com/uploads/1/3/0/9/130969414/jufesuvetalodit.pdfIn PDF document text
    • https://felipivi.weebly.com/uploads/1/3/1/8/131856333/1db574437dc8fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vezoxonu.epizy.com/crash_course_biology_taxonomy_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/sungrow_8kw_inverter_datasheet.pdfIn PDF document text
    • http://rovututuxopi.epizy.com/guguruk.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/7403954191.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/93858762547.pdfIn PDF document text
    • http://sunuwib.epizy.com/purexufitoxuzadidad.pdfIn PDF document text
    • http://jemibare.epizy.com/bipagelota.pdfIn PDF document text
    • http://tutivute.epizy.com/jofavowoviwagopap.pdfIn PDF document text
    • http://tudulem.rf.gd/ciencias_formales_o_factuales.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_off0000c60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60F 5528 bytes
SHA-256: 85f91a6de563ac0b32982cd8b5ae4c58e88e082730c3d969b5cb5e7df214e1f5
font_01_sfnt_off0000d907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD907 10500 bytes
SHA-256: 34bfa2e9531079b6d55e098d88ed667937c95fef29c5a9261cc836bef42ea1ee

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