Malicious PDF — malware analysis report

Static analysis result for SHA-256 11651ca5a77deeb1…

MALICIOUS

PDF

54.8 KB Created: 2020-10-21 16:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 80165ff077e8c21b82ff0759519b8483 SHA-1: 59ca792aba3aa1e60efa6f59efe4528684adac95 SHA-256: 11651ca5a77deeb1202b8a96fe68a17f77f3b5d790bdb375d8714a87e8edbd40
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://gettraff.ru/123?keyword=bwin+sports+app+android In PDF document text
    • https://s3.amazonaws.com/wilugugo/73151423666.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/nccn_guidelines_thyroid_cancer_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/55319707386.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/display_system_and_anthropometric_data.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381104/normal_5f8f4d9e7270b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f8b065e43230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f89d87635e7b.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/282584.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/rudixeja.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/dc3e4d77ec.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/pukisuxobijubobute.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/4816729495.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/paises_y_capitales_del_mundo.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/78475218183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f87834a19393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386618/normal_5f8dd255e1829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f8e73894585f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8932920324b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_5f90116da1e35.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/1/0476/1452/5596/files/3236551296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9462/0333/files/82791271887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7073/2456/files/sejosudafa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCB 4732 bytes
SHA-256: d265be5cbbcde2e8a62e3c3107b1f7ed051a7fe29744c902ae1c2ddc1f0663dd
font_01_sfnt_off00007de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE4 14088 bytes
SHA-256: c04b47b0232d23efa2735d013f1235dadf66786ed5a9298751f2898821e0cb12
font_02_sfnt_off0000aaaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAA 16096 bytes
SHA-256: 13c540cfff82c4dbf750c4d8c74e2b7b4ef1ed85145f82e59f5e6266b522e2c0
font_03_sfnt_off0000bf71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF71 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3