Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b20ebf4c1814be…

MALICIOUS

PDF

68.7 KB Created: 2021-03-07 19:15:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1fdfb56a15491ed6443572355382aaeb SHA-1: f73f08c2f5399e57ec41ca3127fd0233c8e51e9a SHA-256: 64b20ebf4c1814bea5487034f65f93711cde4e8ee808902fd8c045b9d4d005b2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=two+rivers+water+reclamation+authority PDF link annotation
    • https://cdn.sqhk.co/xixofivib/PSjhwmp/stupid_zombies_2_snow_day_37.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/giidFnu/.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/jiihhMf/minidrivers_similar_games.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/gej9ghJ/wumuvanibilusilufam.pdfIn PDF document text
    • https://dolilifiwu.weebly.com/uploads/1/3/4/4/134401054/babf47d1e.pdfIn PDF document text
    • https://samabuwe.weebly.com/uploads/1/3/0/7/130739499/bewisixulakowajot.pdfIn PDF document text
    • https://bebotarusi.weebly.com/uploads/1/3/1/4/131454771/c0e9a696.pdfIn PDF document text
    • https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/lazatemezo.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/jghifid/79292256304.pdfIn PDF document text
    • https://bojozavo.weebly.com/uploads/1/3/0/7/130740433/2652c50ac.pdfIn PDF document text
    • https://cdn.sqhk.co/gasajolop/gcFK0uG/79234720015.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/hc5V6U9/85781270153.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/73bc5417-d441-496c-b8ff-e75da86e2dd1/lirr_monthly_pass_long_beach_to_penn_station.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d931d190-605f-4646-8f8f-b22080647025/88729784607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b7d711b-ef93-4dc4-92d9-c71d3f9a2857/59302051875.pdfIn PDF document text
    • http://relotetuje.rf.gd/60064800788.pdfIn PDF document text
    • http://jelenexej.rf.gd/ankidroid_for_iphone.pdfIn PDF document text
    • http://jefepar.rf.gd/safe_coliform_levels_in_well_water.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a20e2dd3-9d22-4b3f-81bd-7ba5d7b06133/48236461502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d58bf8-4011-4d7b-82d2-45e60b1fdbb6/boundaries_in_addiction_recovery_worksheets.pdfIn PDF document text
    • http://zujuketa.rf.gd/scrum_burnup_chart_excel_template.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_off0000cca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA8 5244 bytes
SHA-256: d370483e1636b5c7a3edd9c78b4a992b9b4e365da6ee1f89711b9253769bee88
font_01_sfnt_off0000de6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6C 11876 bytes
SHA-256: 1a31da8a87216f8b636dc7ced490a8750e8258344b35bd0de303a1f3e2e974dd