Malicious PDF — malware analysis report

Static analysis result for SHA-256 550e6a2e471e49fe…

MALICIOUS

PDF

42.5 KB Created: 2020-10-03 14:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 487b786b15829045f7dc26ad23a9f3f9 SHA-1: 7b8cd5a63ee18e6e9e2180e9e76e66fb68e6c307 SHA-256: 550e6a2e471e49fe30dd3fcf481b2e9692438fbe19150e448fd5ad4199e0d2f6
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://ggtraff.ru/strik?keyword=comment+fusionner+des+pdf+gratuitement In PDF document text
    • http://files.sharingfamilymemories.org/uploads/1/3/2/6/132681443/kulowagomages.pdfIn PDF document text
    • http://masero.nelsonphoto.ca/uploads/1/3/0/7/130776262/251563e.pdfIn PDF document text
    • http://files.fccwareham.org/uploads/1/3/1/4/131408245/c32cdcc11.pdfIn PDF document text
    • http://files.gospeltrumpet.net/uploads/1/3/2/6/132695915/lekita.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/81453211929.pdfIn PDF document text
    • http://wosok.biglittlebrains.com/uploads/1/3/0/7/130775365/8442268.pdfIn PDF document text
    • http://files.maddieberry.com/uploads/1/3/1/6/131637755/ca1986997f84cbb.pdfIn PDF document text
    • http://files.newtotowncollective.com/uploads/1/3/0/7/130775431/vedabuwumidoj-kidupep.pdfIn PDF document text
    • http://wixasakez.nanasvoicestudio.com/uploads/1/3/1/0/131070450/f07ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006578.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006578.bin)
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/fojog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8210/8065/files/pulling_me_through_dr_ra_vernon_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2922/0504/files/54740245813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4829/9417/files/benefits_of_timed_repeated_readings.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 extracted file (font_00_sfnt_off00006578.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 5232 bytes
SHA-256: b63467e5070a157e36c996fdd5eb703f2b2ee54b924126c77f887afa85ac6ced
font_01_sfnt_off00007728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7728 11408 bytes
SHA-256: e2ff68c1864b4234abc9d18a8486d60fb2a7b996708a301428b26336316145b8