Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bff6fd7f33f0429…

MALICIOUS

PDF

49.6 KB Created: 2020-11-05 21:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7b5aff3ad8ee4e2d9c595822735ca5f6 SHA-1: fb0d465f59672dcfe383b0b8162f5c3b5e2a3812 SHA-256: 0bff6fd7f33f04297657d3856a5d54aafa8c3f3caae9fc5d62b2b8225f86b933
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/123?keyword=123movies+watch+us+free+online+2019 In PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/naxikezomafizaw.pdfIn PDF document text
    • https://nivawapononagi.weebly.com/uploads/1/3/4/2/134234681/rokarazujusid.pdfIn PDF document text
    • https://kanudepu.weebly.com/uploads/1/3/2/7/132740929/powukaw_sunuf_ruziwi.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/fugis.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/5757932.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/9372825.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/7637803.pdfIn PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/xolubelozo_polezewurujewab_temivozox_dijada.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/dufola_kefarivuguf_tufop.pdfIn PDF document text
    • https://kagafalevusina.weebly.com/uploads/1/3/4/3/134368330/202ee180be9.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/7196eb53-a41e-4ba6-ad95-34ed8fb111ec/sugizadibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92599e27-6ebd-4cbd-9020-83cc373e004d/jofozunepobuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8816eef1-29c3-47e9-b62a-433dd7ad77f5/55004833406.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_off00008079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8079 5824 bytes
SHA-256: c89e43e58f667f91f3c232a65223e610f71a535650540c1f66c39fb0236c44ef
font_01_sfnt_off00009435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9435 11076 bytes
SHA-256: f0d2466dfd196f1cbfd025c1f3c6515a163d45f8224830aa244154ee4935f454

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