Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8a3aa9445ec16a…

MALICIOUS

PDF

51.1 KB Created: 2020-10-27 12:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: b3696b84fcaef13933ef9c86aad43960 SHA-1: efbb7d09b4c005e63b77d196d573d71aaed099be SHA-256: 5d8a3aa9445ec16ab3c44cff581a4ea72875349e0c59e2573ada305b3eefa53b
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://cctraff.ru/wb?keyword=loam%20sand%20moulding%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f875cbe5f278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f87b3ac48b7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_5f8fad837b7ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_5f9396995e114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f8be74989d46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5f8b18285c234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f905a9975a8a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fasanag/julelojavozobatuwepanero.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/fernando_pessoa_antologia_potica.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/18613226727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b94bb82-461c-4ca7-a60b-5952abe91df0/bmi_Rechner-was_sollte_mein_Gewicht.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109267f7-911a-4c3a-a20c-424e43a60282/zexewedetegenaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8484f1-144e-4714-8e9d-6a2c3af4bf99/vewlix_arcade_cabinet_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1592de7f-30cc-4bfb-bb9f-614824f9de59/90338861570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1924/2152/files/33693970701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/cancer_de_ovario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6843/1777/files/united_standard_hydroquad.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/77546476883.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/radial_engine_assembly_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/70877830049.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/47248829167.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC6 4888 bytes
SHA-256: fc87e1be690f08e953188282c313abaef190a9d93a451b5e12de3dce0a8bee2f
font_01_sfnt_off00008f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F46 9916 bytes
SHA-256: b570503055d74247f7fa6836a746bd69fe26582026be54a4de34eebb02acbd53
font_02_sfnt_off0000b11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB11B 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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