Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa11bbf4b5ce53a…

MALICIOUS

PDF

46.4 KB Created: 2020-10-15 06:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a965e415fd70f34e67f6afcc1593c95e SHA-1: 15754ddfe30e8b1b4df958861faa96a115aedc4e SHA-256: eaa11bbf4b5ce53a75f2503192f02bf7c8377c526fc81b11c6c79dc705f61d20
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?keyword=determinants+of+perception+in+psychology+pdf In PDF document text
    • https://site-1038837.mozfiles.com/files/1038837/89319731218.pdfIn PDF document text
    • https://site-1040391.mozfiles.com/files/1040391/68044355905.pdfIn PDF document text
    • https://site-1039695.mozfiles.com/files/1039695/mujotoforupapubasaga.pdfIn PDF document text
    • https://site-1042504.mozfiles.com/files/1042504/kejosutoponafexipoxanafu.pdfIn PDF document text
    • https://site-1044015.mozfiles.com/files/1044015/lebipelovokiv.pdfIn PDF document text
    • https://site-1044240.mozfiles.com/files/1044240/50244241344.pdfIn PDF document text
    • https://site-1042453.mozfiles.com/files/1042453/96132787480.pdfIn PDF document text
    • https://site-1036632.mozfiles.com/files/1036632/romabipexalezezoged.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/nubanugawalobutuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8764d4ed7f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f8784f8b4dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f87255114a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f86fc414a275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87a466d7692.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f879014444dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f874d263f936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f87b375e3329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f875e2766b8b.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/925a660c-dd2d-453e-9261-24a3a5084db1/74339456385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3d82670-11fe-4f3c-aff8-8bd4fa32e6ad/towinapivuzoluzik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b44406-dd7b-446e-bd4c-19b1c84dcbc1/sidoridurilos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcf8a134-f5fa-4039-8d07-dfc728920aed/vuledewutukadegikusanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4bcf44e-f976-49a6-b756-8b2efe360dae/wibeguzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d32c7e-5334-417e-8c60-b91422838492/59082534617.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_off00007585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 5672 bytes
SHA-256: 3888a3ae0aae84a41bda811aff177e975573746d3b303b69c9a74997a213d86c
font_01_sfnt_off000088a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A6 10316 bytes
SHA-256: bf274f9e9b38bbe0fbf11903b193c521c71bf01f9a765410e5f264e1a4e39b94

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