Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29cf3302450dd48…

MALICIOUS

PDF

45.4 KB Created: 2020-11-05 18:33:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ca4fa66febf667297641b6c542b6a6e3 SHA-1: d009b7a6e550f648b5cf0b6991f7cd87a1d2b5f2 SHA-256: e29cf3302450dd483683de1efd5360ebfebd29cebeb227b1fc13299562017d8b
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=testors%20aztek%20airbrush%20manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376852/normal_5f8c406777c3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5f9f29053278b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f9943eb3e3d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5f91618b2f1cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5f89ddc5cf9af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_5f9f325cbe3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f9ca907394eb.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/7d60ddb3-47b1-4e9e-b579-7fbe4fb3c6e5/2474238851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3576c73-9def-4c7d-88fb-6a547ea04fd1/the_well-grounded_rubyist_3rd_editio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8502fdb6-87cf-4278-9dbb-8d1c05131400/68434141746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec68966c-c48e-4c48-b6a8-0c0c0b9ce827/ab_rocket_twister_exercise_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95acc60c-b23f-4e59-8b10-1bb99539964b/57455072897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd542daa-2358-4a02-9e07-a5e1ee77560d/jaane_kya_chaahe_mann.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cc2f388-0480-4412-9e85-195b7d20f309/the_american_journey_textbook.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_off000074d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D4 5128 bytes
SHA-256: 4353fcef9907d79bfc985986a73dc9dc60f3e2a454f814b2261a43f64211c227
font_01_sfnt_off00008622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8622 10144 bytes
SHA-256: d6021cf9a9802901ad99a1786777ad6e4c300e118859edd162cc3a989c07e14e