Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d486e0f76384aac…

MALICIOUS

PDF

71.1 KB Created: 2020-11-08 02:34:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 89b2fa210a090af1e915dde3f8f51af3 SHA-1: 69997d02d8acc17f24924d8ca89d4a13aba92250 SHA-256: 5d486e0f76384aac643040af6df2fb9682b9c12a8ecb4aedaf7e60bab0c887a4
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=ark+survival+evolved+ps4+single+player In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f90c9d487f09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f8ea408c99b0.pdfIn PDF document text
    • https://kitovipafabezed.weebly.com/uploads/1/3/4/6/134600887/918a011b2b.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/foxugadub_wuxobawuluxo_tamajunenilu.pdfIn PDF document text
    • https://tigafuxofezez.weebly.com/uploads/1/3/4/3/134363272/jokap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412593/normal_5f9b3a0412503.pdfIn PDF document text
    • https://takimibovejexi.weebly.com/uploads/1/3/4/5/134512521/zigufi-tulopan-tupowunulojuz-todasaxovode.pdfIn PDF document text
    • https://kupifibadobibe.weebly.com/uploads/1/3/4/5/134512214/758a2179.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wefaresif.files.wordpress.com/2020/11/95021015300.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/gakilazu.pdfIn PDF document text
    • https://rukuduxep.files.wordpress.com/2020/11/pokemon_light_platinum_complete_guide.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_off0000d789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD789 5428 bytes
SHA-256: 2738710397e00449f5b12cb1e34070f5a6d01a66b17375d993c86846f9173591
font_01_sfnt_off0000ea28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA28 11048 bytes
SHA-256: 103604bb972109c621f63d19bbeb7db0a6d0ce0b49dc31d5b99b03c63d98365f