Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4c7124a6b1f88b…

MALICIOUS

PDF

44.0 KB Created: 2020-10-25 17:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-03
MD5: 149ba3ac17a162d4d49bbbcc70fe3b08 SHA-1: 31e0bc35663dfb099c8d21c9a80b4e14cf630bf9 SHA-256: de4c7124a6b1f88becd461af9d78c2fdb4416fbd276d4001fe628162b88d621f
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.com/123?keyword=skyrim+vr+enb+guide In PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/wujumoj-womivuzile-subejivanoge-werowubara.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/miruxiboporunew.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/waxojug.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/8411480.pdfIn PDF document text
    • https://zotadipijipas.weebly.com/uploads/1/3/4/4/134467791/ratiwomupawex_sokajir_mebufufosifofu.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/75577766067.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/myanmar_grade_9_english_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/pazuturufiremakubujeji.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/linoperovojojewij.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/5413437.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/lofedotiserito.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/gekoxuvizobuvewil.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/8b8e08dcb70e6.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/1257824.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/6916491.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/gikab.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006d8f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006d8f.bin)
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/49580687523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/manual_triturador_de_alimentos_insinkerator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2019/7281/files/vuwewatafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5699/4721/files/drastic_emulator_app_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9259/9193/files/asphalt_7_heat_v1.0.1_modofflinecars_unlocked_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5882/6909/files/19530906904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6399/6316/files/94420852393.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_off00006d8f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8F 5196 bytes
SHA-256: 7dee778fcb6ada46d29d03cea167e7eeab219a812650723d9e80c379cf9d21e3
font_01_sfnt_off00007f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F30 10608 bytes
SHA-256: 3cb3c539d4628d426a74ecf7eb68a0e904c867adfa62fbd58c348e79aa0a811f