Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca11010572727fb1…

MALICIOUS

PDF

71.5 KB Created: 2020-11-11 07:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 1d843ff1961e2ff19448e2cc7a230e03 SHA-1: 2a2baede6b9f0b11cc6475777f47b8c7f16f31f4 SHA-256: ca11010572727fb1804a6dad058a060a9b0042d6b4f04668615bc30bf290b12c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/123?keyword=jack+williams+general+manager+ewtn In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_5f9daf728b046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f872c854c1c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446029/normal_5fab61e6b1103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401989/normal_5fa33b9fe1876.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/a89a12aa-3dc7-4f08-b11a-ff996acf5dc3/download_freecell_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/capitals_of_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d46af5d-3a5c-4a55-a0ff-6d0bded863e8/mulikubudidazirotenux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4a8db5-53f0-4c15-ade2-3dd23f0ff753/53344207185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/235b26fb-582c-45fb-9f64-ce78832b7049/bevomoxugojadawa.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/wv_board_of_social_worker_examiners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8813f1e4-94cc-4d67-8919-e5ee5ed3e844/murray_ms2550_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/72657968236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7e1f898-8d5e-4362-8c45-ed431d77f8f5/retijufudebuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e74e850f-8647-46fa-9295-d5273e56ddee/3541_pokemon_platinum_version_us_xenophobia.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/renewable_energy_sources_books.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_off0000d8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D5 5264 bytes
SHA-256: 13e5374616d999a82a4081576dc2a593d35190381769aadf965ebc28bd9eec4c
font_01_sfnt_off0000eabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABD 10796 bytes
SHA-256: 9e236564eab5de83c41f8c47641c7c450b564551c7d2bda66072633725fe8afb

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