Malicious PDF — malware analysis report

Static analysis result for SHA-256 000e07d65f5c37e6…

MALICIOUS

PDF

80.0 KB Created: 2021-05-11 12:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bb857f08a7ddfb4ea88a5ba2b78a2680 SHA-1: 772eda382b6c72fa3fc8a03e563a66f2b0704bce SHA-256: 000e07d65f5c37e62d9b224cd5ec2f9681b1a2481e117bb593bfbd18b56cd255
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URIs hosted on disposable domains. The PDF's structure and embedded URLs suggest it is designed to redirect users to potentially malicious content, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used for malicious redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://resalured.ru/strik?utm_term=international+maxxforce+oil+capacity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495855/normal_5fe74c32d07c0.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/Viegegg/t_galleria_by_dfs_hawaii.pdfIn PDF document text
    • http://techanomic.com/813637087648qjyz.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/cKgjggp/fifa_world_cup_trophy_image.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_600c3975e240e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_604a7a321d8d7.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/jivaju.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/SMpS8ie/herpes_simplex_10_quote.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444875/normal_5ffe099d455f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_5fdb169563a54.pdfIn PDF document text
    • https://cdn.sqhk.co/fovomesit/jbLu8gh/62824738585.pdfIn PDF document text
    • https://cdn.sqhk.co/genazeres/vjdickq/ark_survival_evolved_low_end_pc_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/Gha3ih3/science_book_9th_class_download.pdfIn PDF document text
    • http://dle-tpl.site/dixujafulenimujhmm.pdfIn PDF document text
    • http://kikifikoxije.mypressonline.com/bhagavad_gita_in_telugu_with_meaning_free.pdfIn PDF document text
    • http://tomogorman.com/39747482147y8agy.pdfIn PDF document text
    • http://in-step.shop/73754010470nc9bo.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/hj5sjnt/sonuwixulapere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lamupimifuban.onlinewebshop.net/adjective_rules_in_english_grammar.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/qing_liu_algebraic_geometry_and_arithmetic_curves.pdfIn PDF document text
    • http://bidejepeko.onlinewebshop.net/what_are_five_characteristics_of_a_healthy_relationship.pdfIn PDF document text
    • http://wipadafefuxasi.onlinewebshop.net/relative_clause_worksheet_ks2.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_off0000f9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F8 5088 bytes
SHA-256: b1f4aa1ac702836146371af69a33367e07b3a3e4ef6687ec8192bcce801b8f64
font_01_sfnt_off00010b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B45 11632 bytes
SHA-256: 617ad58886cad27cd9f4157ca0e5ffc971561c5faa8a108a6fe32c3291f5666f

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