Malicious PDF — malware analysis report

Static analysis result for SHA-256 752518439d6179cc…

MALICIOUS

PDF

75.4 KB Created: 2021-01-23 14:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a5702bc27c7106c59a92ea40204b2530 SHA-1: b70bfc8fb284120f236f3ac16509d039cd7a0728 SHA-256: 752518439d6179ccf5c2a7435d9aa74bebdb7f6c1f7e5179db99ae8705324013
244 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many pointing to disposable hosting services, indicating a link farm designed for SEO manipulation or phishing. The presence of a malicious redirector URL further supports this. Although no scripts were explicitly extracted, the PDF structure and the nature of the links suggest it's designed to redirect users to potentially harmful content.

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/aws?utm_term=play+xbox+one+on+android+tablet In PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/16331897c6.pdfIn PDF document text
    • https://site-1247346.mozfiles.com/files/1247346/54741881296.pdfIn PDF document text
    • https://site-1178814.mozfiles.com/files/1178814/rodoxanaxo.pdfIn PDF document text
    • https://sozizupisez.weebly.com/uploads/1/3/1/8/131872239/defero.pdfIn PDF document text
    • https://site-1175927.mozfiles.com/files/1175927/72166139373.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ff288fe21337.pdfIn PDF document text
    • https://duloduwo.weebly.com/uploads/1/3/4/8/134850843/54feca3b871d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475379/normal_5ffd613a3bb36.pdfIn PDF document text
    • https://site-1168389.mozfiles.com/files/1168389/suxufekonokegezoxi.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/zeridamubukerelufof.pdfIn PDF document text
    • https://vizedaxitexoter.weebly.com/uploads/1/3/4/7/134740617/niriwa_xilikodupaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484156/normal_5fe81980ab4f7.pdfIn PDF document text
    • https://jomopejizudo.weebly.com/uploads/1/3/4/6/134664487/seraroroso.pdfIn PDF document text
    • https://mirivibi.weebly.com/uploads/1/3/4/2/134234555/64456d40bfd9.pdfIn PDF document text
    • https://marajudalade.weebly.com/uploads/1/3/1/4/131438096/6096732.pdfIn PDF document text
    • https://site-1168513.mozfiles.com/files/1168513/sdf_3d_apk.pdfIn PDF document text
    • https://site-1176622.mozfiles.com/files/1176622/erpnext_user_guide.pdfIn PDF document text
    • https://vidisuxusa.weebly.com/uploads/1/3/1/6/131606291/bevakilifideto_rozarubewol.pdfIn PDF document text
    • https://kixujededewi.weebly.com/uploads/1/3/0/8/130814479/tawogoniwurizo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484618/normal_5fced500e48e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 4740 bytes
SHA-256: 8550f8786d620874c9bb6b8954958304661929ba9b1d9d1c723222d6efafc704
font_01_sfnt_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 10768 bytes
SHA-256: 2195acf2547fb68a01fd8589200357b5090a32d90d23eb3d86444ac1846569ed
font_02_sfnt_off00011288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11288 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361