Malicious PDF — malware analysis report

Static analysis result for SHA-256 42caaf4248f75484…

MALICIOUS

PDF

71.6 KB Created: 2021-02-12 03:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f89c57f841973f3c5004536f62a8af33 SHA-1: 39c20f71394ce50f5645c57e0f71ce3d564a9c00 SHA-256: 42caaf4248f75484d0d01e9d06193b0b32a9fdc70c2686d0370183268551a89f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it is designed to redirect users to malicious content.

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
  • 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://baarspo.ru/123?utm_term=first+class+requirements+answers PDF link annotation
    • https://buronoveze.weebly.com/uploads/1/3/0/7/130739674/bfb36.pdfIn PDF document text
    • https://lorivomewojesab.weebly.com/uploads/1/3/0/8/130813497/bb283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408481/normal_6023e6531ceb9.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/hjYQuhg/candy_fever_game_free_download.pdfIn PDF document text
    • http://muluwusive.22web.org/fuxowamupezixotoxizisujol.pdfIn PDF document text
    • http://wavarev.22web.org/40849592631.pdfIn PDF document text
    • https://daradila.weebly.com/uploads/1/3/1/4/131438164/5830498.pdfIn PDF document text
    • https://cdn.sqhk.co/bimepefav/eheBjjG/44359082197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491945/normal_6011fb827ce94.pdfIn PDF document text
    • https://wiguvufa.weebly.com/uploads/1/3/0/7/130775639/zomobowozifipiluwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486535/normal_5fd1fe38c7c7f.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/5kAqPjf/80170162713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_6003e17abefae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutagefen.epizy.com/introduction_to_reliability_analysis.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_off0000dbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDD 5120 bytes
SHA-256: e4a6ddc1c7d919c9029e0488b48f8ae814129e9e7aed074d8357f0e7e3ba0914
font_01_sfnt_off0000ed4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 10560 bytes
SHA-256: dcda1da93b7bfcf09684917cacd0d9768da92e6aa42c5aa042775d353252af92

Open this report in the interactive analyzer, or submit your own file for analysis.