Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edccc91e16becc9…

MALICIOUS

PDF

88.2 KB Created: 2021-02-13 08:25:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a9d38ef42d28fea6f8f9f0c31b6e9d20 SHA-1: 9aabe539b51b55e9a6c05b5f12c1bc7f0b91eead SHA-256: 8edccc91e16becc98ca335f9fa2a9257b3df11ac9f01ce65ae18751694c91144
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely a malicious domain used for phishing or distributing further payloads. The PDF structure and heuristics suggest it's designed to appear as a normal document while redirecting users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=plans+for+reconstruction+clash PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366665/normal_6018a30b821ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378405/normal_5fc799b50b482.pdfIn PDF document text
    • http://bellissimo.online/kimariwilsvmpj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365620/normal_5feb89dba8e50.pdfIn PDF document text
    • http://auto-agents.space/stilbene_melting_point0x6s3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367277/normal_5ff1d3162c43f.pdfIn PDF document text
    • http://pokypka.xyz/auriculoterapia_puntos_maestros4hq2t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_602034d3ac537.pdfIn PDF document text
    • http://vejefulolite.22web.org/c_manualresetevent_vs_manualreseteventslim.pdfIn PDF document text
    • http://lakshmi-store.ru/mcculloch_chainsaw_3516_service_manualnttxv.pdfIn PDF document text
    • http://adv-workshop.site/neonatal_intensive_care_unit_protocolsxgvjw.pdfIn PDF document text
    • http://nutesane.iblogger.org/metabolic_confusion_diet_plan_for_endomorph.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/b._com_ki_full_form.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kuxegu/wephone_free_calling_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/custom_form_border_style_c.pdfIn PDF document text
    • http://norilonabu.epizy.com/propylene_oxide_msds_sheet.pdfIn PDF document text
    • http://bupizaxumora.epizy.com/elementary_biology_textbook.pdfIn PDF document text
    • http://zozoresupiz.epizy.com/saxewatanos.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/android_jetpack_navigation_drawer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11262 4852 bytes
SHA-256: 4b93083d3e9cf557fd9a33de7582d4e7e22491fda06be1b46b30979be5b335b3
font_01_sfnt_off000122d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D3 10148 bytes
SHA-256: 897a483245ebb552f9ccd7c302f03b46de9d5be89dbc4c1646f163a297e3f526
font_02_sfnt_off00014586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14586 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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