Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b46bd307c1eb74e…

MALICIOUS

PDF

71.5 KB Created: 2020-11-08 13:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: def455cba80be59695e584a1006ce877 SHA-1: 26cd8d1e3ca03e04065ce84d3fbc654927a6de8a SHA-256: 6b46bd307c1eb74e200be8d24c2da4126409b228fa38ef2b7e15da70858ad2fe
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://trafffi.ru/123?keyword=dhs+st.+elizabeths+ribbon+cutting+ceremony PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5f9b3d7d11e17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_5fa59862b595f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f93cebb3d2a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_5f8f5569a2f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_5fa3efdd9d63f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_5fa25eccc9854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_5f9efc7abbc37.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://s3.amazonaws.com/zasepo/firixavalopil.pdfIn PDF document text
    • https://vilawajor.files.wordpress.com/2020/11/49288782846.pdfIn PDF document text
    • https://vuworopa.files.wordpress.com/2020/11/17564976749.pdfIn PDF document text
    • https://kifebag.files.wordpress.com/2020/11/fundamentals_of_probability_with_stochastic_processes_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd34d55f-bd9a-41f2-a661-8c5edb9796bc/ganurow.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/2996011627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afdd768f-f315-460b-805e-2536a45ab46d/73369869222.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/codes_for_murder_mystery_x_2020_list.pdfIn PDF document text
    • https://vaxurudo.files.wordpress.com/2020/11/zitofitapivulagu.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_off0000cd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD61 5416 bytes
SHA-256: 5cd8aff5445a87a897a85ebd9aac263950373839335aad726ace8854bf9e31e0
font_01_sfnt_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 10212 bytes
SHA-256: 77830060c75d18783ebb9a54661dd3f83b214079d249b4573237386ecfb48708
font_02_sfnt_off00010299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10299 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e