Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deccb6aeed0a070…

MALICIOUS

PDF

35.7 KB Created: 2020-11-06 13:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 76ed4a6d5fe39361afbc88588df34739 SHA-1: f6a272df2d84d8ad66c975aff3867de406622070 SHA-256: 7deccb6aeed0a070c8a7067938e791b1fbde391509df42583a715b55f2fb82e4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://traffset.ru/aws?keyword=2014+mustang+v6+oil+change PDF link annotation
    • https://lisewukalog.weebly.com/uploads/1/3/4/4/134435391/voduj-soxifefupuxuwox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f8cba8292e24.pdfIn PDF document text
    • https://weduzoviduluwiz.weebly.com/uploads/1/3/4/3/134385862/5998289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415944/normal_5f9bf0fdeeaf7.pdfIn PDF document text
    • https://zugufavowi.weebly.com/uploads/1/3/0/8/130874222/4900efd31424701.pdfIn PDF document text
    • https://rukinedofixod.weebly.com/uploads/1/3/4/3/134348838/vomaribowujitesuw.pdfIn PDF document text
    • https://rixidagetowema.weebly.com/uploads/1/3/4/6/134612143/rabita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8226a7bd-8a89-49e0-845e-d03c4865537f/compte_rendu_exemple.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/jinisozekemaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b63d52-69ce-413f-aa41-8ff18e2636dd/96076249123.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/addis_ababa_university_mba_research_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa124803-6f81-4189-a981-d131281b5ca8/zeforugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5191a3f5-bda7-463b-a936-60b423a927e8/nugipujugadudowido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442752bb-c7d7-42d1-834e-8e8db432e280/vabekemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7e0471e-2deb-401c-8913-462c825b94ad/nutritional_supplements_book_lyle_macwilliam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23953030-44b8-4f42-afc5-e3eb1a031449/kebekamujamexe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4387 5532 bytes
SHA-256: 89c4f90aab9560b400ccf7c37ecab1a2c00d9e67aee6d2bc9803b62580b68ee9
font_01_sfnt_off0000562c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562C 8712 bytes
SHA-256: a74c28e4c64b8a3caf3b12ce720dfc233a7d1b67581608b13d8cd75239096283
font_02_sfnt_off0000740c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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