Malicious PDF — malware analysis report

Static analysis result for SHA-256 e582accc90c9f26b…

MALICIOUS

PDF

45.3 KB Created: 2020-10-22 23:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c0be7f040dfc14c09efa2b9e90175d6c SHA-1: c324bad1a24c4228b2668e8bd8de98b11855ac4b SHA-256: e582accc90c9f26b2606aa08cd34d09d34b2120716c32c2a9948c15d69a44669
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.me/123?keyword=kanakadhara+stotram+-+tamil+translation+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f870458bbffa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_5f8a26f3c7853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f880daacb562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5f8c3c5b822d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005bf3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005bf3.bin)
    • http://fedorahosted.org/lohitIn extracted file (font_01_sfnt_off00006df5.bin)
    • https://s3.amazonaws.com/zetare/12874931701.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/social_psychological_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/zagusogavazimopojeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ecf9bfc-032c-4393-83b9-1cdabbe9027b/freakonomics_movie_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bf45f03-01ad-4fb8-997c-02755c5a3144/44335875083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/847aee35-5e67-4f85-bba9-64fbd78e3493/15172719228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c057a3-daa3-44bf-9a0d-971c51b7577b/xuzexuwigejaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35fa8144-4ce0-4072-ba14-727cbb3bad7f/86656115605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d08d1f92-6792-47c5-8574-fce5d46b2dbf/80766154826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a4a69e-e91e-41e3-a7f7-07c07d1d823c/81181875383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac413e64-4bbe-4ea6-8215-39d467063a0e/55280225612.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/66453860978.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/35559147772.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 extracted file (font_00_sfnt_off00005bf3.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 5344 bytes
SHA-256: 77465d9ce7b50c36322c52ed066d9399f453eca3a3cc287d4329e308801f67bc
font_01_sfnt_off00006df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 3248 bytes
SHA-256: 40a65bd477b356efbd0385dc9403804f71c9df4bf1c14fa3f0d874d0f83355cf
font_02_sfnt_off00007a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9B 2024 bytes
SHA-256: 6edd2dc65f8cc0d4bfc465674af3a6957927c9580e196fa1f2ecab0bfce717d7
font_03_sfnt_off00008431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8431 9648 bytes
SHA-256: 0f3e338b0432a7135a665e61f4cf1aaa9087e1041fc6e09249cd1112b635c39c

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