Malicious PDF — malware analysis report

Static analysis result for SHA-256 4785a8dff01f50af…

MALICIOUS

PDF

41.9 KB Created: 2020-10-11 03:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: e63cbe5bc953680c8d3b0d4b693d944e SHA-1: 065a9516f6f81b0107daf0ee7a953172fc24af3b SHA-256: 4785a8dff01f50af4e7ebed96273ae782025a4f770a13cb3e920e60982a6233e
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=alain+gheerbrant+pdf In PDF document text
    • https://site-1036632.mozfiles.com/files/1036632/76568947831.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/84476350031.pdfIn PDF document text
    • https://site-1044159.mozfiles.com/files/1044159/xeraligopip.pdfIn PDF document text
    • https://site-1042359.mozfiles.com/files/1042359/91206024144.pdfIn PDF document text
    • https://site-1036879.mozfiles.com/files/1036879/39132628269.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/dowut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/kugel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1544/6423/files/loving_kindness_sharon_salzberg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4889/0268/files/24639244853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/86015915121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0377/2056/files/duberebuwoxum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/section_2_reinforcement_solubility_and_concentration_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2173/7373/files/sisafukumegomotevo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CB 4932 bytes
SHA-256: df03cce84699a1653c6b0f2d71c55175e181d732e41d457c6f144c94063faf0a
font_01_sfnt_off00006876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6876 10724 bytes
SHA-256: f138101e7867677b114f4bda644ca7e0bdf0e66520e6af8d6c3e7377814dfe78
font_02_sfnt_off00008ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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