Malicious PDF — malware analysis report

Static analysis result for SHA-256 d248b62baaf2ff62…

MALICIOUS

PDF

70.1 KB Created: 2021-03-09 06:17:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0f6d95de47527d3bc3913cc2680d2e81 SHA-1: d16d30b9774118b1fe89f36e9101c2997809c5b6 SHA-256: d248b62baaf2ff6218a4eb5874b731d59e9a48bcf665f65011a6ddb8dff4a447
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://kuzutuzo.ru/wix?keyword=rational+exponents+worksheet+with+answers PDF link annotation
    • http://whitetwo.space/amcap_full_crackv2l8c.pdfIn PDF document text
    • https://bemawupi.weebly.com/uploads/1/3/0/7/130740003/mesafule.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/kuvilunexumake-pewinibeza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426075/normal_5ffc6f3dcadb2.pdfIn PDF document text
    • https://kodidorimo.weebly.com/uploads/1/3/1/3/131380292/4536693.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374535/normal_5fdec464e189d.pdfIn PDF document text
    • http://sodahq.club/warm_bodies_full_movie_download_in_hindi_dubbed_480ppxoec.pdfIn PDF document text
    • https://kunugamonigosa.weebly.com/uploads/1/3/1/8/131871761/samonaj.pdfIn PDF document text
    • https://bogonifad.weebly.com/uploads/1/3/4/1/134108647/defesafa.pdfIn PDF document text
    • http://detonic-buy.website/tax_analyst_interview_questions_and_answers9obwq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_4b897ca63f9f4cf4b809849f19b3fb01.pdf?index=trueIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_1b89c5158fa04a538707eb98a14d292a.pdf?index=trueIn PDF document text
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_0d60625f4d824c75a369702d1414bb63.pdf?index=trueIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_ae02f5359f394b96a6f93cf663386b9c.pdf?index=trueIn PDF document text
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_7c7422e1caca4f958647ef3c62d9c988.pdf?index=trueIn PDF document text
    • https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_3a6d39dd62474ac787bdbbbc75c05a04.pdf?index=trueIn PDF document text
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_68332d8594c0465597e71930b273b7d4.pdf?index=trueIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_db243ed04a58471cb66ed8adfe0f520f.pdf?index=trueIn PDF document text
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_09635ed13e1d427ea883376c7afff2ae.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_off0000d702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 5136 bytes
SHA-256: 16a5ad29a605c0a0b0e090d323054ae97258b21af8b29a4d396855fa1eb45e52
font_01_sfnt_off0000e890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE890 10004 bytes
SHA-256: 84758fa614be5fcf004f6380a173b4f6d72279da561e9d2c783641b32f0dd24a

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