Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bb79868c9eaa27…

MALICIOUS

PDF

44.6 KB Created: 2020-10-04 19:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 34fcf2b9b3387adf666ad8880508b75b SHA-1: 757c6c8b5f0915ead453800bac97935427a17f0f SHA-256: 72bb79868c9eaa275a62841ab4cc74b77fc8308cc8c1e298179fc1c37003dd25
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://ggtraff.ru/strik?keyword=how+to+remove+gridlines+from+excel+worksheet In PDF document text
    • https://site-1042539.mozfiles.com/files/1042539/32735904648.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/jigoludusajukodonuwoj.pdfIn PDF document text
    • https://site-1042765.mozfiles.com/files/1042765/vadifo.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/61314861546.pdfIn PDF document text
    • http://files.fresnohighcheer.com/uploads/1/3/0/7/130738738/e534d.pdfIn PDF document text
    • http://linuvoj.littleluckydaisy.com/uploads/1/3/2/7/132740850/3871292.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/aee178c1-a869-4b2b-b4f7-7bfdbb317703/vaxojoboketuxafoxaxus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4842be08-2f8e-4ba9-a5a5-252904aec0be/22086002799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d777de5a-5991-4fc4-9d50-15a10083ffc0/84617397674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37418236-11ee-4486-8f3d-6341980525fa/78269557380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6abb7135-fd5c-4a29-9608-6e23d8be23ba/58572499278.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_off00006db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 5468 bytes
SHA-256: e3651acd9cdbdaacd46be17143f950f0419b4f0c0cc24f950a9c4c7bccb447e6
font_01_sfnt_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 10904 bytes
SHA-256: 7d508f2839feb7fa271a5e416fd889ea5204ddae0ea6cd99cd2435d200ab1955