Malicious PDF — malware analysis report

Static analysis result for SHA-256 58be336c07c5340f…

MALICIOUS

PDF

82.5 KB Created: 2021-04-04 12:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0fdf95fafad9cc9a4152f74f64c90bd3 SHA-1: d18bc00ddcdc60c7d77599507cc5cdc332db5ebe SHA-256: 58be336c07c5340fe0b0ab240c688d7cc56c5e76acfa79c5c4dff7ba660cf2b8
126 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with heuristics indicating it functions as a link farm on disposable hosting. The presence of external URIs suggests an attempt to redirect users to potentially harmful websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=does+roku+ultra+support+screen+mirroring PDF link annotation
    • http://qrettalq.online/how_to_adjust_the_float_switch_on_a_sump_pumpx3ayg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474720/normal_5fd7b56269509.pdfIn PDF document text
    • http://shoop-ff.ru/cue_sheet_editor_freeware8nv8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_600bd0ab83a3f.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/9648640858.pdfIn PDF document text
    • http://vuvuga.xyz/constitucin_mexicana_artculo_110a6xkb.pdfIn PDF document text
    • http://healthyforczechrepublic.site/zagasidakodih6q9r.pdfIn PDF document text
    • http://naturaleone.space/electricity_meter_reading_dubboecp43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476282/normal_6029c86000f76.pdfIn PDF document text
    • http://jufanurozud.getenjoyment.net/applications_of_gis.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/pokajisozul.pdfIn PDF document text
    • http://fotonagosuslugi-01.space/11274733681lg751.pdfIn PDF document text
    • http://loxupuf.mygamesonline.org/parabonubokomawu.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/75916196860rv9li.pdfIn PDF document text
    • http://profoto22.ru/xizenilukilixinelieym19.pdfIn PDF document text
    • http://umdtheatre.ru/nisene_marks_trail_mapwd9e3.pdfIn PDF document text
    • http://tiwujatujoput.mygamesonline.org/excel_formula_multiply_multiple_cells.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_923152563a3649a49fdf16af8d11435f.pdf?index=trueIn PDF document text
    • http://sakogabutal.onlinewebshop.net/suite_bergamasque_clair_de_lune.pdfIn PDF document text
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_a183282ae83b4d458c2624e8a23a18c3.pdf?index=trueIn PDF document text
    • http://kemesuxaw.myartsonline.com/dododorufositexapakit.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_off00010439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 5316 bytes
SHA-256: 32bdd22e6dc0f3f19e9a659c89f45eb4b019261b07c4a3884cd9e6bd072800f9
font_01_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 11376 bytes
SHA-256: 08bd22152e311a862d399227e7c9e1405a2acd68111bc70079679aefb9f52fad

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