Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d88ff7337bce6e3…

MALICIOUS

PDF

40.9 KB Created: 2020-10-20 21:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 276eb88952999d08f9b553dd62cd700e SHA-1: a30a8cabcc2a1516bbf10acead721d997e91ee16 SHA-256: 5d88ff7337bce6e31b5bd1a7c94a8b8171c0ae2a30ccbe5cdcaacdb15124cb85
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.club/123?keyword=music+manuscript+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8b35f4b82b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f8d628e83aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_5f8edd41a218b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f89d0ab403c3.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/xaxebujakaw.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/3c8c50b.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/bofajifolapumalij.pdfIn PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/d3f5d62682.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://cdn.shopify.com/s/files/1/0501/6748/0485/files/57369312430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9572/7007/files/definition_of_barrier_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8693/2894/files/android_phone_charger_for_europe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/airtel_thanks_apk_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/clicker_wireless_keypad_manual_liftmaster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7ea48b-d7aa-4885-a209-900aea6b6f11/80961477897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fe4692c-a056-43d7-94c8-ff5316d19f70/xemegupujasofij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921007b4-ed84-471d-a98e-e21bca631b40/estudios_biblicos_para_jovenes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ae9ef89-5d63-4f89-9366-bb90cbda4995/dexegetovivonow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a97acb-92b9-485b-b87b-f83a537d8938/45446193108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b9eccb-3ca0-4817-9bae-993e254721c1/10105036966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a80d5d-f82d-4c95-88ab-22c5074c0d3c/wuromeru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a150a31-6682-47ad-a3ea-566a609c23c9/47073561614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/647e2b81-c44c-4232-8af4-9be3f22e7eda/45549812940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f350dd7e-07ea-4d1d-a418-d6bb42745829/10203402416.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_off00004e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E45 5244 bytes
SHA-256: d78292ddfc3ca4f054bdd29a2f31a61ef81dd41353038f247f5d5a3a3ef5e781
font_01_sfnt_off00005fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEE 12768 bytes
SHA-256: 5289eaf1be7a6cca92d53677b858a77dd24933553b1acea1c30c2fcbbaebd42c
font_02_sfnt_off00008847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8847 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2