Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd8be2adbf6cb3cc…

MALICIOUS

PDF

36.9 KB Created: 2020-10-17 22:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e6f67882d5f2391b5450ed29a95a3cc4 SHA-1: e8b6d78f19988265f7bbd5a358bfbb44f89d6cad SHA-256: bd8be2adbf6cb3cc3907dec5989137aed5f8de88aa2063efcdc48a8f1eca7002
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://gettraff.ru/strik?keyword=gregory+scott+tarot In PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/10d616.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/7049741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f89768f3c4f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f8747c7acfbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8705bb3bade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8a28930c7ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f8a200214625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8aefb48ba1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f8829a51e38b.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/1/0266/9461/5238/files/alternate_start_infinite_answer_fallout_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1465/1559/files/my_daily_dives_in_the_dumpster_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8617/9229/files/59611348383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5845402b-4c2d-419c-9a2f-f4786082af13/nemexekazisizudilez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f35eea98-e674-4f24-a083-119d257a4730/sedululufuvurabunopopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c263336a-f773-4427-a33c-fc1bf18a59a9/60635095741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/927eadc4-ee7e-4e9e-8d8d-8dcd3f880804/49880671859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a71d3092-7eee-4e67-86e0-4efa216a3b7f/74314579144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9724/6884/files/rasagil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1995/8944/files/wysoka_czapka_uana_krzywka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/hot_foil_stamping_machine_australia.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_off00004f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3E 5068 bytes
SHA-256: cd74e2de0513e9cd226ec4c957e8e2db04415efdcd4559506604bffc53c7c8ca
font_01_sfnt_off00006098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6098 12472 bytes
SHA-256: 05cfee9bb3388b72d2da9a7f462317cecb6c373236e65f0e4f26ab9adf649906

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