Malicious PDF — malware analysis report

Static analysis result for SHA-256 19167309d99a4e9d…

MALICIOUS

PDF

75.9 KB Created: 2020-10-14 09:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 72096870a4b26b4c38bf1db3d0947a99 SHA-1: 019dc22fcf5ed6cb14bc6eb8395bb2b84ab56ad9 SHA-256: 19167309d99a4e9dadcd9e9aac1ca07957480dc00180b223945fabf8374860b2
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=android+sqlite+delete+all+row+from+table In PDF document text
    • https://site-1037265.mozfiles.com/files/1037265/duwewovazopevavavoxusozi.pdfIn PDF document text
    • https://site-1039201.mozfiles.com/files/1039201/kitelebivekofafofen.pdfIn PDF document text
    • https://site-1039443.mozfiles.com/files/1039443/29569815525.pdfIn PDF document text
    • https://site-1040223.mozfiles.com/files/1040223/gawifusudekemisejes.pdfIn PDF document text
    • https://site-1040094.mozfiles.com/files/1040094/tomudugejowuwi.pdfIn PDF document text
    • https://site-1040400.mozfiles.com/files/1040400/92338515443.pdfIn PDF document text
    • https://site-1038317.mozfiles.com/files/1038317/91259764201.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/1/0482/7663/5812/files/beselemisulonome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/1408155887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/setigakilofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8546/6267/files/lesson_4.3_practice_a_congruent_triangles_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1519/1202/files/rosicrucian_monographs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ce4c51-bc3e-42bf-b1e0-cb8628ade02f/23242882377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81083f2a-9528-4c60-a8e8-3d9b850f1ca8/88175968619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58270556-b4f3-4e1e-a918-1bf8bf8b77b9/mijubozabisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e8f603-4a86-4c1b-a447-3b16164b5a2f/komobizajabumigetatak.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_off0000ebfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFE 5400 bytes
SHA-256: 2c74cdbbc547dd30db324d07c2a481d7ab1c3df3d8d6ca2856a2bba39819926a
font_01_sfnt_off0000fe4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4F 10608 bytes
SHA-256: a60a7a5f71620b3b1348f29d5ac289529b768672252150a33e7087a2e349a2d7

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