Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ee912cfc63d573…

MALICIOUS

PDF

37.3 KB Created: 2020-10-09 00:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 46051cede45a60a8c9d95d090ff9719b SHA-1: 6c2a2bf53984a6a4553f2db53f51ceb8f754c484 SHA-256: 45ee912cfc63d573243915617cc1e47039caa7f17830ec3590ee5f3135c86840
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://cctraff.ru/strik?keyword=amsco+ap+human+geography+chapter+4 In PDF document text
    • http://files.joemattison.com/uploads/1/3/1/1/131164032/vawudisu.pdfIn PDF document text
    • http://files.verplanckfire.org/uploads/1/3/0/8/130813325/bijaperibu_vobebu_jezonuras_xufijinugixu.pdfIn PDF document text
    • http://rezab.gk4x4sales.com/uploads/1/3/1/0/131071145/9615669.pdfIn PDF document text
    • http://files.colorbychris.com/uploads/1/3/1/4/131411987/3164681.pdfIn PDF document text
    • http://files.thedolphinboat.com/uploads/1/3/0/8/130815059/ruwevu_buverufuru_ramefadov_tibusapix.pdfIn PDF document text
    • http://files.davidrainbow.com/uploads/1/3/2/6/132682040/8136c143.pdfIn PDF document text
    • http://files.waramaughospitalityco.com/uploads/1/3/1/3/131379477/filizoxij.pdfIn PDF document text
    • http://files.amerishop.biz/uploads/1/3/1/3/131379846/tatase_pewemu_diwevo.pdfIn PDF document text
    • http://sumakepud.pioneerplumbingheating.com/uploads/1/3/0/7/130738720/givofefopo.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/e0f43f2c-54b1-41ce-98ed-311f2e68e469/23082321792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c87d6961-2670-4231-bfcc-eb8da26c6549/99374976270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/998ca10a-721c-4701-9fff-985926da8bdb/numarokiwijeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a776df-0487-4ba5-a4f9-dd79324b4098/nepopujiwexilorok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b455982-7eea-4fb3-8ba2-59ab456165e6/96887401019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/0758/8768/files/list_of_regular_verbs_in_italian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9359/7601/files/durimulalajeli.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B2 5496 bytes
SHA-256: 6f7b101347dd06cfd365e4c6b5fc8f1b2e76fd9497af5ad5cba06e64073b53c6
font_01_sfnt_off00006548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 10296 bytes
SHA-256: e07ac03949ecd48fa59407ceacae362d31f2ee2173a4c83bdf3408bdf0589d0c

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