Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc26df1871dee49…

MALICIOUS

PDF

41.8 KB Created: 2020-11-01 14:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 23be86c251a94947abce4ac22f76eaad SHA-1: 710a829d6876773e7f8791d297af9d731344bf9d SHA-256: 1dc26df1871dee4967e7e1faa3a366d676d53fee7bdf4c02d7a10e54638e6b3c
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://ttraff.link/123?keyword=vbucks+generator+free+vbucks+no+verification In PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/d0b98e7b0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/nawedolijejebixose.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/248755720.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/xizil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055d3383-804a-4ccb-b2d5-da0c57644f86/kojodonikinodana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/milan_system_salivary_gland_cytology.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/toxusajikazuwepiwupaxob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d341171b-7773-4061-a0c5-1e08ff29d4c3/94448723993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1059/1390/files/55572814859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef4790ff-c57c-4786-bf4a-8866f0fc12de/naregim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e2e5389-c9f4-4763-835c-7cb910ade728/the_continental_system_restricted.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9345a2cd-f4bf-4d37-8f94-12218ed96dfd/47142668762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d11b7bc-72a0-49ff-bdab-232523335b96/zijujig.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_off00006648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 5244 bytes
SHA-256: 34fc841e71697619f006c0dd53dd12cfb47b29a05261d447237b168cccbb3435
font_01_sfnt_off00007840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 9924 bytes
SHA-256: 9e29585f54f7b1ab2a8fe3c3d0e8cba75a9e89701b7730962b2148ca52f9ed61