Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8938dcde904ab4…

MALICIOUS

PDF

78.0 KB Created: 2020-11-05 01:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: e467b00bdfa3c70bf1a7e42ad70735d4 SHA-1: d452c29ad357d119c7e45276fbd9cfa34aa90a3e SHA-256: aa8938dcde904ab4a022777d7e847eab8162a5d4d6ce941c16de90c61210fd1c
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://ggtraff.ru/strik?keyword=languages+of+eberron In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_5f949cf231fcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f88546cc9b5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_5f9c83045e1b1.pdfIn PDF document text
    • https://xozavakude.weebly.com/uploads/1/3/4/5/134581018/sofilugawedov_fubuxe_xigorimiwifexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408587/normal_5f9d36a02cf67.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://uploads.strikinglycdn.com/files/ca580f5d-4601-48bc-9876-a7e6f354124a/84504379637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76757e23-6403-422a-b99d-507ef3705ba8/dominican_republic_world_travel_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4ccfef-75c6-4b9d-806f-dbfee8a9fe4c/10024671468.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/the_four_loves_by_c._s._lewis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19cac8d5-bda3-44c6-905f-35eeba711279/69233249326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10cd56d1-a5f7-4f71-8afb-88b903d091cd/practical_arduino_cool_projects_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44121c76-09ba-4b4e-b811-f7ab7b59aa88/la_doctora_juguetes_en_espanol_en_su_hospital.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/livro_capitalismo_consciente_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39df70e7-234b-4812-8341-dc5e622b92a0/vadisovidubusemunilode.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_off0000e888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE888 4736 bytes
SHA-256: e0cf6162f60c7a2e3004cef0f5f20a6ef2f154f8d096ab40610a161c2f0610be
font_01_sfnt_off0000f8ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AB 10776 bytes
SHA-256: 7619b20de82923dcaadf1bf15f04ab2c9ff60f2dd7b71fdbe0a1970e7cf23351
font_02_sfnt_off00011cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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