Malicious PDF — malware analysis report

Static analysis result for SHA-256 0490f3334f2f203e…

MALICIOUS

PDF

86.0 KB Created: 2021-03-30 16:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 881c4e178d172c812f6a1f274e3a229c SHA-1: d6c2ba83ec58d0b715cc326af8bfca820751305e SHA-256: 0490f3334f2f203e8bf893d00ac5b609402ddda05bf0d2f1442917c874f09cea
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. The presence of a link farm on disposable hosting further suggests malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://druttle.ru/wix?keyword=apostle+taylor+jail PDF link annotation
    • http://instasurprise.online/40667877334y6p5r.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/hihhqif/snow_queen_leisure_world_prices.pdfIn PDF document text
    • http://subonus.ru/rimozelizugorigubolife4swxl.pdfIn PDF document text
    • https://cdn.sqhk.co/kabolode/fr5ji0M/zunototamip.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/dTXNKoj/speed_game_hacker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_6051ffd7c6d2a.pdfIn PDF document text
    • http://trynutra.shop/cooking_dash_cheat_sheet35312.pdfIn PDF document text
    • http://cardioactiveuficiale.site/vokogutufonaxetobamofudorlqbpn.pdfIn PDF document text
    • http://50offstore.pro/ejemplos_de_dialogos_formales_e_informales_en_inglessmft1.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/jf3xyss/classroom_management_plan_sample_seameo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492918/normal_5ff9edd71fe5f.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/iijdNNR/sapelupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5feee157bb913.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://314f4944-3dd9-45af-b5ee-fc7f46c963e4.filesusr.com/ugd/73cb9e_7757c1d8b91f4748b5906e378cc2cdc2.pdf?index=trueIn PDF document text
    • http://topowurarasixe.epizy.com/afl_tipping_fixture_2020.pdfIn PDF document text
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_fc4f89b46d3244dea166965769059a47.pdf?index=trueIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_85174810a1e84f898ca850143aa2f934.pdf?index=trueIn PDF document text
    • http://jaberorer.epizy.com/28602798992.pdfIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_5a097019670d46b588b2e664dcd7d371.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e84829ee-0200-45fa-ba1f-54bba0e1b4cd/quien_es_el_personaje_principal_de_mi_planta_de_naranja_lima.pdfIn PDF document text
    • http://jopatodorijapu.epizy.com/2005_dodge_ram_1500_4.7_engine_oil_filter.pdfIn PDF document text
    • https://692937ca-140d-46b9-9715-018e108c1018.filesusr.com/ugd/2540a5_7eaac0619ca2469fafa680853df995f7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbeecd24-8d0c-4e73-af62-9c10376ebce2/45340964696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f093c840-43d9-483e-bfc0-c119e89306d0/5_examples_of_similes_and_metaphors.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED7 4980 bytes
SHA-256: b49b70a30e304f3db2c3d1c77f5a35c04a9983c476124b8dfe57af1544c05efb
font_01_sfnt_off00010fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDF 11132 bytes
SHA-256: e8def09f8b5f4c220358dccb37f9b2efc390dd0c04de9f6496e40e5bf3ceb5e8
font_02_sfnt_off000135bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135BC 16060 bytes
SHA-256: f60502fb507c904334c4e6f64201f20e056641c8e54386132246a428bdda64b8