Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceaa43513336ad1d…

MALICIOUS

PDF

52.5 KB Created: 2020-11-09 01:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d0052b061b36eb8bc8d44c68f29ead9a SHA-1: 2854d5dbdeff8c75d9951a6912c2bf4568313368 SHA-256: ceaa43513336ad1d4ab8ff54734ed39affb5078cc1b1ebad1307bff8ff3278cd
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://traffking.ru/aws?keyword=the+reprise+of+the+spear+hero+manga+rock In PDF document text
    • https://cdn-cms.f-static.net/uploads/4443810/normal_5fa1f6c3e365d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8708f7b0c12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f8e549b26af7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5f9666ae81a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f8d6e4b4efa7.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/rewutazob.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/kodumov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dowuwiridewe.files.wordpress.com/2020/11/timixuwifawuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/tekujel/mesevivupejakupoku.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52928779-392c-45e0-a5fa-557848588254/16913049828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d213a5-db49-4b29-91ea-d9b0695c62a6/kuzhal_melam_rajesh_cherthala_video.pdfIn PDF document text
    • https://bofubifabe.files.wordpress.com/2020/11/archeage_fourth_twisted_gate_fragmen.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/bryce_canyon_national_park_map.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_off00007540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 6516 bytes
SHA-256: 6553ed71758d2ccfa79c138ee92034eb1c29f8887bb5cea9c9a240578fca0141
font_01_sfnt_off00008b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6A 5412 bytes
SHA-256: cafff2a1a5a9c87dce167ea6b3de9d8d6f614a5d07ada070f021197ffe1b74c5
font_02_sfnt_off00009da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA7 11900 bytes
SHA-256: 90816a2f4443494a3fdb55d16e3d8e65cc24d0cbb0688deebebcd6728150b885

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