Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03360595215f593…

MALICIOUS

PDF

47.1 KB Created: 2020-11-05 07:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f6f032775dcf4034a6c057e272b81dcb SHA-1: d8595a65ebf0b39778e63c79aad33b272bfcd115 SHA-256: e03360595215f593e8a0d99ea863b428aa6438217340527df09ef67f6fa8c2f2
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=middle+sound+worksheets+for+kindergarten In PDF document text
    • https://likojekiputisi.weebly.com/uploads/1/3/4/5/134576895/5a067a71fa98791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f92a56c483c0.pdfIn PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/edd21bb41bbf.pdfIn PDF document text
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/8312942.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/a6c6b1c6430.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/xopojadito.pdfIn PDF document text
    • https://gowokijisamupu.weebly.com/uploads/1/3/4/4/134438950/romusigodube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_5f9d029f5f94c.pdfIn PDF document text
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/sikevaxubesijekov.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/3696ad0a-de5b-4a32-b2ba-19a9ae1824f2/ontario_drivers_handbook_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c095bc3c-1950-4ee4-99be-7ffd4f6b5ac6/auditing_and_assurance_services_15th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6753/9107/files/31680424169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a79a4dc-4906-42a9-9b68-054de115421c/soccer_head_championship_unblocked_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d50fd5e-339d-4519-b4b6-2037863ff3c0/5664288916.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/jozaxuvimutusanipuxefexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87101673-8efd-41e8-b074-4cde4c354b81/wolisowurimux.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_off000067aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 5212 bytes
SHA-256: 383976cb793a770dd63c40abc7c6c5ac1bc9f38548546ddc76c6f4613b322050
font_01_sfnt_off00007970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7970 11468 bytes
SHA-256: a990987a980e9f3b97f14c5af55be6bfc18f68d070e526a9992ac79810e9ae7d
font_02_sfnt_off0000a0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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