Malicious PDF — malware analysis report

Static analysis result for SHA-256 46954da5cfe05b47…

MALICIOUS

PDF

59.5 KB Created: 2020-10-01 07:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: be532a86c7c8770c6b9c9e462d6ea6ac SHA-1: 3c599b9ddc5e17628cb462d00571d39fe4d9ea10 SHA-256: 46954da5cfe05b47b7b10971e618f013a55466f6138a9f8ef96e938f43ef8f35
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=phenol+formaldehyde+resin+pdf In PDF document text
    • https://site-1037837.mozfiles.com/files/1037837/vowenufopepubiparoxaboru.pdfIn PDF document text
    • https://site-1036639.mozfiles.com/files/1036639/vetipipekigugolarofamu.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/dovuroboni.pdfIn PDF document text
    • https://site-1036909.mozfiles.com/files/1036909/3267809539.pdfIn PDF document text
    • http://topoz.8150consulting.com/uploads/1/3/0/7/130740080/zegufugem.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/1/0437/5969/8077/files/39750731732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/morfologi_daun_belimbing_wuluh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6796/files/jeladarixarod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e760f8-7e4d-4b56-b22b-20241d57af6a/80764126063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6d2143e-0675-4166-bcaf-8b0bf4a74d54/985117592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ab4a7b3-f055-4d7d-af61-1d4a631dc566/zivesurezebosapuruwexabiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7876c56c-0bcb-4d2f-b4e9-4d9bdad90ce0/rikowomisexiji.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_off0000aa97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA97 5384 bytes
SHA-256: f4a7ac34dbffcc63373ee8e57d1c5f83110753e1173ef892d3265e7d003815a8
font_01_sfnt_off0000bcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC2 10636 bytes
SHA-256: 083b797b68b2cd7ca50a5015eebef3d0f1e4036d655f5d63e97bdcae4c64b816