Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76065310238ddf4…

MALICIOUS

PDF

43.1 KB Created: 2020-11-08 13:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 5a2aacea43be2af4715ebad513a5ea69 SHA-1: 7596c25adfe625ee4576fa6920baf24f0d292e61 SHA-256: c76065310238ddf43ed81288611721cb46d6d8dffb7886b6eaf0f27513c3ca8c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=curley+s+wife+of+mice+and+men+loneliness PDF link annotation
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/zixuxedetaratu.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/lodetadixa.pdfIn PDF document text
    • https://zemodeviwiteg.weebly.com/uploads/1/3/4/3/134351550/6016032.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/jowijum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zojemadej.files.wordpress.com/2020/11/73587489466.pdfIn PDF document text
    • https://xigikomi.files.wordpress.com/2020/11/3206945544.pdfIn PDF document text
    • https://zegasaxum.files.wordpress.com/2020/11/gerumiwaj.pdfIn PDF document text
    • https://sojivuwuwof.files.wordpress.com/2020/11/46491456729.pdfIn PDF document text
    • https://kozosimo.files.wordpress.com/2020/11/78125479540.pdfIn PDF document text
    • https://papunovab.files.wordpress.com/2020/11/amlie_poulain_comptine_dun_autre_t_partition_piano_gratuite.pdfIn PDF document text
    • https://danopoxuvava.files.wordpress.com/2020/11/gawifuzoga.pdfIn PDF document text
    • https://bexekugob.files.wordpress.com/2020/11/ditexekos.pdfIn PDF document text
    • https://dutekosakiwe.files.wordpress.com/2020/11/gopitebojikuna.pdfIn PDF document text
    • https://favasesufut.files.wordpress.com/2020/11/55389963215.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_off00006a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 5264 bytes
SHA-256: 17eff6e3d9a4283b7d8425188667dde220c5dc7bb55617c11c0008aebaeab064
font_01_sfnt_off00007c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 10368 bytes
SHA-256: 39dc8b3f12d79ce9fd9da23ccef0f3e8b1e60a7ee5d0161e0c3eb403eca3ebd8

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