Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdb7374d24107b4d…

MALICIOUS

PDF

40.8 KB Created: 2020-10-13 06:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 14edd5fa7290d374280b41e4a5ec5c4c SHA-1: b13ff1b9c440137b6908301be7fc0edee2e44a8f SHA-256: fdb7374d24107b4d224594d655d95b01c2eb32505df6ab4a5f99f3a330b24af7
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://cctraff.ru/strik?keyword=boral+versetta+stone+installation+instructions In PDF document text
    • http://rikizekiv.awbphotography.ca/uploads/1/3/1/8/131856516/0b0f911a0bde02.pdfIn PDF document text
    • http://files.greatlakesdebtrelief.com/uploads/1/3/0/9/130970012/zikuxilaralazu-nefuwarot-lipuleteg.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/1/0437/2771/6506/files/melamijademotul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6189/8135/files/89649492746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/72840769524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4559/6569/files/2001_yamaha_bear_tracker_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/levana_astra_camera_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f73217-afca-4faf-a823-494f84f74db6/55622510393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50606be-dfb8-4902-8347-a2a4cc3aaaf5/40406474276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a8af61b-916e-4270-b217-8f672ee70f78/58271561787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c6da1a-8b70-4a8f-80d6-c245cd606d4d/sewojezewevo.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_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 4904 bytes
SHA-256: 75bb3db5ab1403966a1ce3e63b3b46b5ff1ce5817ec55c9c15eea953860bc0e8
font_01_sfnt_off00007231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7231 10520 bytes
SHA-256: ac3e8779cb829855c0ea759433769bc83208b4fafeb413d309bf4f5121c0480d

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