Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb3384d6269fe7a…

MALICIOUS

PDF

47.6 KB Created: 2020-11-09 03:33:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f18fa27de78f34cdc7604dd95828ceff SHA-1: 0c66d529704b6cf90205d2480f50ae67792ca10b SHA-256: 5bb3384d6269fe7a19ecfb931b1c67bde9c29af1c41e6402e5276bc571776350
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://traffking.ru/aws?keyword=minecraft+1.14+fishing+loot+tables In PDF document text
    • https://zasisenixe.weebly.com/uploads/1/3/4/6/134632294/finulonavogawizuf.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/xuwoza.pdfIn PDF document text
    • https://tozupefiga.weebly.com/uploads/1/3/4/2/134265365/vidotuzigo.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/3816164.pdfIn PDF document text
    • https://zisikokemebekus.weebly.com/uploads/1/3/4/2/134235681/6250038.pdfIn PDF document text
    • https://vodakobawuvij.weebly.com/uploads/1/3/4/6/134627811/892831.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://mepugen.files.wordpress.com/2020/11/ap_statistics_investigative_task_chapter_4.pdfIn PDF document text
    • https://junevip.files.wordpress.com/2020/11/telugu_wedding_invitation_video_templates.pdfIn PDF document text
    • https://fafutuk.files.wordpress.com/2020/11/rebovirapudufuvugegolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bd9a5d-baaf-4c27-beac-2e88979d4e8c/pilgrim_at_tinker_creek_chapter_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb14fe9f-083f-4bb2-80b0-76e92f2978d1/macroeconomics_5th_edition_krugman_and_wells.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/vibinofa.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/kumub.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_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 5460 bytes
SHA-256: d78bbfa2259f342a1c5fed62b103b82d0d9e1e55b02ab0930ed6d9b716df3459
font_01_sfnt_off00008b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B23 11320 bytes
SHA-256: 32615bf7167fc6fa7f5db902c527a4fa8a4b0f70e960487d5ea2934387f13724