Malicious PDF — malware analysis report

Static analysis result for SHA-256 19124c1c9ae7d0f3…

MALICIOUS

PDF

40.2 KB Created: 2020-10-11 23:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 41fa87ab74e354dd09769d7a2495b69c SHA-1: 67b0f9280461c73bd40790264adb3597f6de3153 SHA-256: 19124c1c9ae7d0f3c31b5353cec7252a9e8e3993529e3bb3376f43dccd2763ab
142 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cinema+4d+r17+activation+code In PDF document text
    • https://site-1039131.mozfiles.com/files/1039131/tegexibilegibasifoza.pdfIn PDF document text
    • https://site-1043260.mozfiles.com/files/1043260/38060683025.pdfIn PDF document text
    • https://site-1042777.mozfiles.com/files/1042777/13389181932.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/88254387154.pdfIn PDF document text
    • http://files.futurepoint4business.com/uploads/1/3/1/4/131437222/a91dc69aa.pdfIn PDF document text
    • http://xesora.centerartsinnovation.com/uploads/1/3/0/8/130813821/4665511.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/0afce845-9999-4825-b63a-4698fd2544f5/29706517309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4040c9d9-7cc9-4901-8773-a992260f65f5/faludafutajabigumemanuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff8be38d-747b-4b5a-ac88-6f7150c89807/11108001839.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_off00006048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6048 5060 bytes
SHA-256: 0f4d773da7c6eef8d647fc2800fc4c2d4bdb8781049d90253bfd5fd4de6b5e14
font_01_sfnt_off00007175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 10240 bytes
SHA-256: 0aac4e2833b3969154078fa92ef14fece666c7c36044e66a8af1b7f37e8a62d6