Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe4f3e913339d7e…

MALICIOUS

PDF

71.4 KB Created: 2021-04-01 18:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeda4cbd8ab14e2fadb1806255230119 SHA-1: 7bf2a1a4513be21357ab800b0f2268e314498bd7 SHA-256: dbe4f3e913339d7e79436f24ef1e2161f1ed5c43f1a257675ed0d4afacec8572
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to external domains, many of which are hosted on disposable or link-farm-like services. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://dugedepap.ru/wix?keyword=prokaryotic+cells+and+eukaryotic+cells+worksheet
    • http://sunakijabe.sportsontheweb.net/ronanefivo.pdf
    • http://matimomewojime.mypressonline.com/49074590588.pdf
    • http://kevufeduwatawos.mypressonline.com/edgar_allan_poe_the_raven_meaning_of_nevermore.pdf
    • http://didazema.mypressonline.com/monimopekosamasuvuzasolaj.pdf
    • http://ginupedarokuxu.getenjoyment.net/gezifi.pdf
    • http://gelupulofevabek.medianewsonline.com/capacitive_voltage_transformer_working_principle.pdf
    • http://mibemuxagegija.mywebcommunity.org/cub_cadet_ltx_1045_drive_belt_replacement.pdf
    • http://rujewazaxijaza.sportsontheweb.net/gakelamub.pdf
    • http://faxagamebajara.mypressonline.com/abdullah_novel_part_1_online_reading.pdf
    • http://xafawotilujos.mypressonline.com/differential_algebraic_equations_analysis_and_numerical_solution.pdf
    • http://vizexibidoxi.getenjoyment.net/dadijemuvefo.pdf
    • http://luxomozuk.mypressonline.com/oxford_dictionary_english_english_arabic.pdf
    • http://jovopomutulilo.medianewsonline.com/76628405006.pdf
    • http://baderezu.scienceontheweb.net/estudios_biblicos_para_nios_cristianos_sobre_la_obediencia.pdf
    • http://sitebomobegux.sportsontheweb.net/certified_six_sigma_master_black_belt_handbook.pdf
    • http://wugumonisukanib.sportsontheweb.net/cambridge_english_proficiency_1_for_updated_exam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://78ff948a-0765-49f5-a22c-0fbe0eba7848.filesusr.com/ugd/888d0b_c35f1a507dce48f9834af7fa9bfd1ab4.pdf?index=true
    • http://tudixuzaw.onlinewebshop.net/vonabutikiwaku.pdf
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_7cc6db760e254c6eac00d606ea590666.pdf?index=true
    • https://f200304d-316b-45a9-b05c-680123ec6d1a.filesusr.com/ugd/aad1a2_3c8a6c44b15e494cb7c5a83cb9469083.pdf?index=true
    • http://valupakukav.myartsonline.com/wexoneregagijedogifi.pdf
    • http://kedisijusa.onlinewebshop.net/35228925198.pdf
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_9c1c555c0d474adaa4bcb7c4c08fc940.pdf?index=true
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_4a4741c98b784556a761724fc14f3e42.pdf?index=true
    • https://689a2394-1721-4ce0-b6f7-af9f1dc0d621.filesusr.com/ugd/0f5b72_9cbdabd76c8647159f0c08e1c66d4422.pdf?index=true
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_6d38eed63e2847d69f64e8a61056079f.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d958.bin
7d40d4aad26969511d2434c887efe6f402b48f316b43b4e613fbc8112cbef553		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD958 5288 bytes
font_01_sfnt_off0000eb63.bin
5493ed37285634a6286ec9d5049186713102e9d167b9e63cf862a7b83a097429		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB63 10596 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.