Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10403b17123c394…

MALICIOUS

PDF

72.1 KB Created: 2021-03-08 05:58:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2e894c5d72f80e593b5b2b7b46ec8368 SHA-1: c295ee05af6b903425e820ffc6ec7ab7d46853e4 SHA-256: a10403b17123c394f979cbb4f3c889f22a59e110e7a14cf38346c24018d68b7e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://nipisod.ru/wix?keyword=real+life+parabolas+and+their+equations PDF link annotation
    • http://zuzorovix.scienceontheweb.net/52477816138.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/34416819188.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/budoxeraxawatewamirado.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/dc44ba01-d4c4-4050-b59d-4e3e53ece93a/anaconda_jupyter_notebook_-_change_working_directory_windows.pdfIn PDF document text
    • http://mikijanux.atwebpages.com/10599037333.pdfIn PDF document text
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_d757837503a34c0783fcd1808a91ba5f.pdf?index=trueIn PDF document text
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_5a0b3f25bf1747029e3923f328e53453.pdf?index=trueIn PDF document text
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_67e0dde9096c46bb9194dc05742f615e.pdf?index=trueIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_a4fe9c7ba648462488fa1dd15f996a48.pdf?index=trueIn PDF document text
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_c2956db96e934e4ebe79b7db6b17e3e8.pdf?index=trueIn PDF document text
    • https://3caa4030-7dd6-4be4-8a8a-e1981c45b3cd.filesusr.com/ugd/704988_b4963f4d3ee04e79b7a63ef7f9957297.pdf?index=trueIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_51b5aecac2714c948d5a74866d4d6840.pdf?index=trueIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_47ea47cd864b423587eb611e17483f5f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e763b685-57d9-4fa7-b943-35fe083635d3/44782418714.pdfIn PDF document text
    • http://rexefobixavater.myartsonline.com/21441105144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8823ae66-39af-49b7-bd7c-49430f4014ce/what_is_the_salary_of_marketing_executive_in_india.pdfIn PDF document text
    • http://sufixis.myartsonline.com/31503166081.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_129261f25cc2418d83aeaa3d0e83f5db.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_off0000dddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 5404 bytes
SHA-256: 0645a8d814b8d9eb04b97be3d4e7f9b8a193b1304ca6ef92eee6b0734e3153cf
font_01_sfnt_off0000f02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 10288 bytes
SHA-256: ed7c78a61eb229a4cd73d0f89db1b5e128019cc541a813f21f93cea560fc77d8

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