Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d63539e032e333e…

MALICIOUS

PDF

175.2 KB Created: 2021-03-29 14:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: f1214946504ef1e1852f2110da06de73 SHA-1: 5f132bd611b7068c339cd164253bd53190dcd070 SHA-256: 3d63539e032e333e6b790c5c558c348af479e0f964e7fdf453c5f3aaaa094cb4
134 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The presence of urgency-related language further supports a phishing or malicious download lure. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/wix?keyword=assisting+arch+druid+staghelm+classic+db PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464869/normal_5fdeeab682c1f.pdfIn PDF document text
    • http://dimapofisapa.22web.org/simple_circuit_design_software_for_android.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/kujeju_nugakizimab_kopebibekitajex.pdfIn PDF document text
    • https://vijopafixav.weebly.com/uploads/1/3/1/6/131636601/0e8b12f1.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/8687763.pdfIn PDF document text
    • https://peguwuxawotenu.weebly.com/uploads/1/3/4/5/134582441/saniperilataselimego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_600636eacd7dd.pdfIn PDF document text
    • http://wexoxunesixu.iblogger.org/bitirokomorawulasonab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481540/normal_601f131c73f3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465389/normal_602c1f696d282.pdfIn PDF document text
    • https://jujavaxoziwes.weebly.com/uploads/1/3/4/1/134108829/xozigawoted.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zutotonez.epizy.com/antenna_theory_tutorialspoint_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5cd1c67-50db-4b5b-b22b-1785bd8ba38c/yaar_nuri_ztrk_hoca_kimdir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7068f6-1810-4758-9fde-f55f909d3924/jejitofuvepigaloruxulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c6524c1-daf3-471b-bcb3-8a59e421b0c4/how_to_install_chicco_nextfit_zip_rear_facing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7cfa28-edcc-43c6-8084-72585bd95243/burger_king_dollar_menu_hawaii.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faece10e-0783-4582-a049-28fcbfea7766/how_do_you_clean_a_honeywell_germ_free_humidifier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39b5047-e326-459a-a5d1-1a5567e1d5f0/loxerebav.pdfIn PDF document text
    • http://wakinenuzubuvu.epizy.com/bushnell_trophy_cam_hd_aggressor_14mp_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c212ea-94df-4c9e-ad91-ee0ae919dff6/music_notes_emojipedia.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_off0002746b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2746B 5484 bytes
SHA-256: 2fd3f377c018490370cac0c601272e54acf98af21970c46c29cbdede16744631
font_01_sfnt_off000286e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x286E2 12052 bytes
SHA-256: 46bd1a11c13c11e20e8793e1284a2c3b16bb86022badefc3c12ebeba98f9b950