Malicious PDF — malware analysis report

Static analysis result for SHA-256 f258ee57f5573145…

MALICIOUS

PDF

57.2 KB Created: 2020-10-27 19:44:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 7a86dcc8aadefd5afd077e6a8b6a4e97 SHA-1: b27cd1d09446ef9164a8edb7e0047e63cbed58b5 SHA-256: f258ee57f5573145591ddb8658c57c8cc32a6079c825de07dc37aa3dc801baf9
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/123?keyword=battle+angel+alita+collection In PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/de28024b.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/toxulu.pdfIn PDF document text
    • https://fikepeti.weebly.com/uploads/1/3/4/4/134489659/6115030.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/464961.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/4462752.pdfIn PDF document text
    • https://dujibirarikow.weebly.com/uploads/1/3/4/3/134321406/3064292.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/navexarozubuzupo.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/nibiwer.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/76c30d49.pdfIn PDF document text
    • https://risimukino.weebly.com/uploads/1/3/1/3/131383953/2178010.pdfIn PDF document text
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/af58e97c74278e2.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/ab1dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00009fdb.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00009fdb.bin)
    • https://uploads.strikinglycdn.com/files/ae20d891-71ef-4021-a057-2fa40f166812/biotechnology_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eaaec00-b23f-43ad-9d8a-c99262e9389d/54678243743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1923a26-2b7e-4707-b3ce-fcc5cc031329/9238987641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcc03b0a-8ae2-4cda-b4f3-51c6f2850813/85447761805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/pre_algebra_with_pizzazz_answer_key_page_211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3298/4731/files/sogutexexemefijiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4195/5221/files/mafofubageguli.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 extracted file (font_01_sfnt_off00009fdb.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA3 6268 bytes
SHA-256: 61d59807a9879a0ac70e90aa5a84cc048e3c8073f136080a0244e6472a040101
font_01_sfnt_off00009fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDB 4744 bytes
SHA-256: 457cddcac7d9f368ffa06589503bac51589782024026bc166fa8f28f21616eb6
font_02_sfnt_off0000b00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB00C 11504 bytes
SHA-256: b60a298e70b296a54718c067eac512e0e9931a597d36cbf7975c42caf6db281a

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