Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb66f4ea72fd427…

MALICIOUS

PDF

42.5 KB Created: 2020-10-05 20:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 43e63d2db7e9dd78ca0ab9814f94935d SHA-1: 59baab144ee567e4f6e5fb385497d90d43f9da28 SHA-256: 7fb66f4ea72fd427af3c0976bc08a193b50115dd9b55883d6adc126d390dd46e
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=zoom+math+500+crack In PDF document text
    • http://files.mindandhomeinsurance.com/uploads/1/3/1/3/131383398/bonibezekalonipes.pdfIn PDF document text
    • http://pazax.waytoocampy.com/uploads/1/3/1/3/131398020/74d380a063.pdfIn PDF document text
    • http://files.triumvirateartists.com/uploads/1/3/2/7/132740214/8623413.pdfIn PDF document text
    • http://jeges.jenpellingra.com/uploads/1/3/1/6/131636881/dukamamazozimiwozovu.pdfIn PDF document text
    • https://site-1038744.mozfiles.com/files/1038744/gubaxulalevipugowewigevon.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/gepevonilonum.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/b35fc1f9-06ee-4792-879a-017ca3b9f345/85267274227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a796a85e-9051-43dc-abbe-5ae8ae45d07f/kixezesemetena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d887f12e-f432-467e-9c0c-b5e5cd51240c/purakudutotusozaxit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fc4aec0-f0b8-4de9-97a0-c345ea923d24/76769575350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b45a3a-c68a-4524-9122-c72d8567a21d/30618535418.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_off00006822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 5116 bytes
SHA-256: f8bc84423603a096598aac49fbfb7bff4ec09af639ca02cf7514b646563af561
font_01_sfnt_off00007967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7967 10676 bytes
SHA-256: a7a6cc2e421afb80bbcaab4a3b56d7a134fdb6fd11015e1ae22759127bd8c20f