Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddee32481652812c…

MALICIOUS

PDF

41.0 KB Created: 2020-11-01 02:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 701a28bb0b256a46b6848c6214b51847 SHA-1: 4ccbe90a3a688cd5c4c21eddab6b20167ab49551 SHA-256: ddee32481652812c8b0848836a33ee7d2542732366108aeb5f9cd3d4f5869b90
124 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.
  • 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.
  • 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=odnoklassniki.ru+%25D0%25BC%25D0%25BE%25D1%258F+%25D1%2581%25D1%2582%25D1%2580%25D0%25B0%25D0%25BD%25D0%25B8%25D1%2586%25D0%25B0+%25D0%25BB%25D0%25BE%25D0%25B3%25D0%25B8%25D0%25BD+%25D0%25B8+%25D0%25BF%25D0%25B0%25D1%2580%25D0%25BE%25D0%25BB%25D1%258C In PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/454202.pdfIn PDF document text
    • https://tomojuvugitem.weebly.com/uploads/1/3/4/4/134475437/9336573.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/dunufuresetujaburoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404512/normal_5f93306c61993.pdfIn PDF document text
    • https://gizojobov.weebly.com/uploads/1/3/4/4/134436228/lodeguxezamiseli.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/5282818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_5f934452d1274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f8a25cbaea74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6115/8303/files/79684713084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1030/2367/files/dragon_nest_warrior_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae3d897-8b31-44a1-bbea-bcdcff2d7576/xowigokumadilalonezara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5479/1328/files/buwibujoluroke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f210e1da-5bfa-4b21-9b89-c2ef46f01b2c/77748763259.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_off00005323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5323 6192 bytes
SHA-256: e60306bd82c18338e0c686a65bddc93ebb804d0820ec5768e759732e35accb63
font_01_sfnt_off00006776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 14404 bytes
SHA-256: d8177146325423c5ca43d1815dd7bef5f42ded77cd912a4597e3cd93f528fe62

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