Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3a30d7e03645e1…

MALICIOUS

PDF

38.7 KB Created: 2020-10-28 21:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 9103b749a50c70d02542e776740b3ec8 SHA-1: ff131694b17a8e73dd68fd2fa5d717d7bc1f5187 SHA-256: 9e3a30d7e03645e19479887d78ba59dd0afeaf2eabdb562184f2824457a8c60c
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://ttraff.me/123?keyword=center+of+rotation+geometry+definition In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380701/normal_5f8cba743e950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_5f98a89a4085b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f8e529c1d1f0.pdfIn PDF document text
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/4692081.pdfIn PDF document text
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/rukiwelitutop-xelurusu-gepikokikelik-mapedizowabo.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/ac41ba88b480f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419645/normal_5f971a99bb859.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/108f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f910e2111684.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/e8a6de0b-0976-42a1-b754-2fbbfa5aa690/clancy_twenty_one_pilots.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/777ef22e-d869-46e7-8204-24c9e28d2dbd/46040953547.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/towaxogusubabemajamuvis.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/jirevogosorivifanivepuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/48671078567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a8851e3-2d79-470c-a556-2429878358b8/45765768279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0894/8386/files/uninstall_facebook_android_disable.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/computer_science_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2738/4488/files/51790276765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/9701231647.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/pularoziwonig.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/bangalore_detailed_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6352d4-ad3c-44e5-b56a-59f4eaa93136/16015961001.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_off00005803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5803 5024 bytes
SHA-256: 783b58dafedb19f104a0f049b69cda1744f6f86ce67b333436cd39b9c669b1c2
font_01_sfnt_off0000690c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690C 10916 bytes
SHA-256: df28d9ee1da440db4e8cd228e0159b277692c6f8c02ea11eadb14d25dea83423

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