Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e93a035c65b799b…

MALICIOUS

PDF

76.2 KB Created: 2021-02-27 16:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 952f160b737e1b6dcf4df6634d731de1 SHA-1: 1736dbb78d36a49d1c5f7ecbfe005c48c495fff5 SHA-256: 0e93a035c65b799be4cce828dac0cd07dd288e90bc8054d4500671791bffc6bc
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, suggests a lure related to educational worksheets.

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://zajinet.ru/strik?utm_term=gcf+worksheets+grade+6 PDF link annotation
    • http://revadadijavu.22web.org/where_is_thermal_fuse_on_maytag_dryer.pdfIn PDF document text
    • http://bataxabinon.22web.org/best_of_swahili_praise_and_worship_gospel_songs_2018.pdfIn PDF document text
    • http://nazevulilabume.66ghz.com/conjunctive_adverbs_exercises_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/mokevesin/jfkiigf/todoronisetofiwof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://julopok.epizy.com/dsssb_ntt_exam_answer_key.pdfIn PDF document text
    • http://nogurinuzelajer.rf.gd/29678853082.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/78655675989.pdfIn PDF document text
    • http://gapifemesi.rf.gd/java_jre_1._6_0_13.pdfIn PDF document text
    • http://pakatikik.epizy.com/lufuvuvikibebanezupug.pdfIn PDF document text
    • http://naremijex.epizy.com/der_erlkonig_sheet_music_violin.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/integers_worksheet_grade_8.pdfIn PDF document text
    • http://danuriluwo.epizy.com/nagomemofarapotuwe.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_off0000eb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 5592 bytes
SHA-256: fa04114bca5a0924d6385a962c4fc53749933532ab12669845bac1833dbb7041
font_01_sfnt_off0000feaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAF 11016 bytes
SHA-256: fdeea185245b9b74e5b8e078893aac5aa3293449ae4acbced7bac680be6b924d

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