Malicious PDF — malware analysis report

Static analysis result for SHA-256 06306a835b3bda28…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 20:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0fbe5b379768c2eab352ccb49fd32fe5 SHA-1: f1bc7646583820e4843ddfb856b057db10750f0a SHA-256: 06306a835b3bda2895a2409a6d6c91d0c89b88eada24fcde66c0fd54d6424eeb
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to known malicious redirector infrastructure or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain search-like terms, suggesting a lure to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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=where+can+i+donate+used+office+furniture+near+me In PDF document text
    • https://static.s123-cdn-static.com/uploads/4366350/normal_5fcca1a5bb640.pdfIn PDF document text
    • http://solapp.xyz/basigozirimoposaq4n35.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/bokawadilatusu.pdfIn PDF document text
    • https://gilaxisob.weebly.com/uploads/1/3/1/4/131406303/9973612.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494146/normal_5fed448295928.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/chemistry_data_booklet_a_level_edexcel.pdfIn PDF document text
    • http://mabay.fun/69908119108e11ix.pdfIn PDF document text
    • https://jedifubebevaze.weebly.com/uploads/1/3/4/8/134873515/52d9e7d83357a9.pdfIn PDF document text
    • http://hookup157.fun/19256358064btyzy.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/a205dd8d649c0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://runijagaf.rf.gd/85164231061.pdfIn PDF document text
    • http://dagasadat.epizy.com/93293917894.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/internet_video_er_software.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_off0000e252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE252 5244 bytes
SHA-256: 6f284ae98c1fad5e81cf9e8a45af80ebbcaea489087a426e6d79bd7d9f412dd6
font_01_sfnt_off0000f40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 10148 bytes
SHA-256: 0297b01d77ba2ecb0a472d1839c25bf4815cb88523cb7d76357846726ff4e4d3

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