Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa822c04443b31fc…

MALICIOUS

PDF

46.5 KB Created: 2020-11-06 22:09:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 02f9bb1505a6afa7300efc03c7725b8c SHA-1: b8b4aca45c1151fa077a13f9e41e5c821913f4e1 SHA-256: aa822c04443b31fc2d8c1c68aa0bea858e3aadf815ecda32ed0c041b9dffe6e3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/wb?keyword=mariah%20houghton%20husband PDF link annotation
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/298059dfcb18f18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401697/normal_5f93bc36e2d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f875f4653c66.pdfIn PDF document text
    • https://bisetegu.weebly.com/uploads/1/3/4/5/134528498/48441f22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/50939477702.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/mukator.pdfIn PDF document text
    • https://vakonowar.files.wordpress.com/2020/11/728202325.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/able_to_extract_to_excel_online.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/biphasic_p_wave.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/archery_potion_terraria.pdfIn PDF document text
    • https://fefitaw.files.wordpress.com/2020/11/64939725781.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000776c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 5200 bytes
SHA-256: 8622ae80a84049a89a9a01468b863d995e2a44bae9263927bb66579e7c8c8eb9
font_01_sfnt_off00008918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8918 10776 bytes
SHA-256: 1566654c4a27ab994ab909737f8a912a2dfacae6fa94b949d5c2d22df55a5674