Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ad17421bd8a330…

MALICIOUS

PDF

71.5 KB Created: 2021-02-15 19:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f95cc62105c9d40415fb3e700f4135de SHA-1: 4c439f633146273ed76df1bd3f5c24808fa92507 SHA-256: 93ad17421bd8a330eac68eccf938ce072f69d0c33661a8d3b6d1d423b8960b1c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV also flagged this PDF as malicious, suggesting it's designed for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of numerous external links implies an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jottigo.ru/strik?utm_term=a+random+walk+down+wall+street+chapter+10+summary PDF link annotation
    • http://xupenoxerukaj.22web.org/recrystallization_of_naphthalene_lab_report.pdfIn PDF document text
    • http://wuxapogetal.iblogger.org/68711561206.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/ravekor-rafigegofowiko.pdfIn PDF document text
    • http://lapogomofirubu.22web.org/24769022289.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazemi/71638747089.pdfIn PDF document text
    • http://wawavubuwile.rf.gd/63744940532.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/10th_maths_guide_2019_in_tamil.pdfIn PDF document text
    • http://badiwofotafazol.epizy.com/97929591539.pdfIn PDF document text
    • http://dadojusox.epizy.com/tadutilorijobidaf.pdfIn PDF document text
    • http://fuvituze.epizy.com/powerful_verbs_ks2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/xuziraxosorot.pdfIn PDF document text
    • http://lalejifidesuwo.rf.gd/vidmate_apk_for_pc_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/38909635642.pdfIn PDF document text
    • http://rojepubaxogo.epizy.com/excel_lookup_column_from_another_sheet.pdfIn PDF document text
    • http://tojopoxirer.rf.gd/farabapezukukaxare.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_off0000d7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BC 5756 bytes
SHA-256: 7d484d0f1bbc939d8e8894dff584248015034c9837fa986a7337103299eaebee
font_01_sfnt_off0000eb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB45 10948 bytes
SHA-256: a10f5c7ccdec7d5d4a088b5a69d133d25c0be6e20afab0db4749c0c424f0b439

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