Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0849c5eb0c0fea…

MALICIOUS

PDF

77.5 KB Created: 2021-04-03 14:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 58db79554be63c6853799673f3f13b07 SHA-1: ed086e97190356c0b1e1821803a24a56fcf7b8ae SHA-256: 9e0849c5eb0c0feaf3772f64fbcaf394e84acc392f89eb7db3ffaea000dfcb86
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of an external URI pointing to 'bologen.ru' suggests a phishing attempt or a distribution point for malicious content. The PDF also contains numerous embedded URLs, indicating it functions as a link farm, a common tactic for phishing or redirecting users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=04+honda+odyssey+radio+code PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375690/normal_5fcc809b70b8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_601b1deca4b76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447096/normal_6036d19dd2d92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kogopixipinal.epizy.com/lipase_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/control_systems_engineering_nise_6th_edition.pdfIn PDF document text
    • http://gopaxojiximupa.epizy.com/immunoglobulin_structure_and_function.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_33ef2b14496748de91ddf6d8cd7c0d6a.pdf?index=trueIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_f34762f31dbb48b5b098e288096a64d7.pdf?index=trueIn PDF document text
    • http://fopekexu.epizy.com/linux_app_service_plan_arm_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34f558e0-705c-43be-8f95-76b337ded56a/dunkin_donuts_ground_coffee_nutrition_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/053e6741-d6a7-4818-8575-489e46d0fe0e/how_much_does_brendan_greene_make.pdfIn PDF document text
    • http://toxodetu.rf.gd/what_resulted_from_the_agricultural_revolution_in_mesopotamia.pdfIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_67576a19e619407389cd7726d0a00cb9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zonebon/buvanofoderanudipupik.pdfIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_7d1c21fe40234b199d313bb8254df15b.pdf?index=trueIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_af82a0251b534aefbdb37e22e2a0228a.pdf?index=trueIn PDF document text
    • https://6ba7316d-b84b-4ccb-a32a-103c856d4013.filesusr.com/ugd/91f37e_c365ae24187c4345b0c7c26e5c798285.pdf?index=trueIn 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_off0000f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 5232 bytes
SHA-256: e56b6af48801dc8d7b4dd53faca39172cdc6d1b07264b2cf1ddd9a5629efc200
font_01_sfnt_off00010443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10443 10592 bytes
SHA-256: b041e1f5bc3371d305895f69f49fe3099a09d08cb7f3139555287e9656537455

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