Malicious PDF — malware analysis report

Static analysis result for SHA-256 29612f17d0ff18be…

MALICIOUS

PDF

84.9 KB Created: 2021-05-11 01:14:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 37fd9453164b1d28754ff8e17950ac56 SHA-1: 8248c0053879b2b48175711caa9e961ddb09ff7b SHA-256: 29612f17d0ff18be921d2d69df3e541f12e8c975652f35dca98eebe9a5904d23
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to potentially harmful sites.

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
  • 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://xajibur.ru/strik?utm_term=kangertech+evod+vv+starter+kit PDF link annotation
    • http://foxeged.22web.org/resaludogawulotexir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_602afe3472bda.pdfIn PDF document text
    • http://wejesigozolireb.getenjoyment.net/29986418273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_600a2291449dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454545/normal_60305fef11bc0.pdfIn PDF document text
    • http://wulixiv.sportsontheweb.net/que_es_el_bautismo_catolico.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/potepivafobizi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462727/normal_60626294b96b7.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/wopari/sapomazonomad.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/dracula_book_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/5032692664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed19f193-6fe6-4164-b660-fbaf6afa5a91/wahl_cordless_clipper_parts.pdfIn PDF document text
    • http://wufutogaj.epizy.com/avengers_endgame_4k_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/aankh_marey_video_song_pagalworld.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/wonasuduluborakisoxemagam.pdfIn PDF document text
    • http://gizixaxeviduf.myartsonline.com/9670145005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b717596f-29b4-47cf-8493-03ef462685be/87062812049.pdfIn PDF document text
    • http://povodakav.myartsonline.com/1193224551.pdfIn PDF document text
    • http://tarikax.epizy.com/my_pelonis_space_heater_stopped_working.pdfIn PDF document text
    • http://padusij.onlinewebshop.net/mejomepuropawejomadefaku.pdfIn PDF document text
    • http://vipiwimepi.epizy.com/audio_songs_free_old.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/ivd_clinical_trial_protocol_template.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_off00010d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9E 5260 bytes
SHA-256: 53bb97d645f1c3f83d291ed5941f12dff07fc885ef7ecab50d1303175bb4f23b
font_01_sfnt_off00011f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F83 11432 bytes
SHA-256: 7823b77ff009d21feada07eb8ab2bf4b15e91420b0c33a4b171ab89fd59618be

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