Malicious PDF — malware analysis report

Static analysis result for SHA-256 c705847fd7730ae0…

MALICIOUS

PDF

48.4 KB Created: 2020-11-09 04:04:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: eb6d1b98d00a250246bc26fc941fded0 SHA-1: afac9e4c99a97d926ac25e42d438cd08856c40f0 SHA-256: c705847fd7730ae0a5dd4578eeef980189e874a7a2b27efeda41a97f6c648b43
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://trafffi.ru/aws?keyword=caritas+of+birmingham+medjugorje PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f871fdff3cdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://kixatipu.files.wordpress.com/2020/11/ap_calc_bc_2018_frq_answers.pdfIn PDF document text
    • https://gosuvifete.files.wordpress.com/2020/11/geopath_cad_cam_free.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43789b16-7b10-47d0-bc8f-238aa7df2e50/wurebevuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1697ab1-2511-4c4f-8227-c069f4e26e0b/bevuroguxe.pdfIn PDF document text
    • https://redegikabave.files.wordpress.com/2020/11/29838373040.pdfIn PDF document text
    • https://jobebapadi.files.wordpress.com/2020/11/18009351733.pdfIn PDF document text
    • https://dijerage.files.wordpress.com/2020/11/sijifezizogafabojixefijo.pdfIn PDF document text
    • https://tobaluli.files.wordpress.com/2020/11/gakoxeloden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/298a5669-eeaf-4c84-9ce2-290dcb962c51/gituzi.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_off000070b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B5 5408 bytes
SHA-256: b2d5fb413ae39f6abbc89f38caefaa534448ddfaa2e84fcfb0a0f19793ca839c
font_01_sfnt_off000082f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 10752 bytes
SHA-256: 6843997ac637452683cb44552ec671511f6b76c9761df3682bb62e3843ac66de
font_02_sfnt_off0000a741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA741 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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