Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa86270ae79b7827…

MALICIOUS

PDF

40.0 KB Created: 2020-11-05 16:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 192f4ad9c0b9f79a461eba652d5599aa SHA-1: c3879e0911548ca30c99ebf5655e112cb95b6fd0 SHA-256: aa86270ae79b78279097d54f850e3fd9cd685ded05e3774d8bf60f59d0eabfb1
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://traffset.ru/wb?keyword=fnaf%20game%20unblocked%20for%20peasants PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377102/normal_5f8d856ea0ed6.pdfIn PDF document text
    • https://zonisobeb.weebly.com/uploads/1/3/4/3/134333784/guluta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5f9bc83523fa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f9af2cddda06.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/852608.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/6599646069.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/luvuvafenufivuwekopadi.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/munadokeredawoneni.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/ammonium_sulfate_precipitation_table.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/97521114375.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/viropugubadisive.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/vojiponezisup.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/howls_moving_castle_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/illinois_residential_lease_agreement_form.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_off00005ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA8 5636 bytes
SHA-256: d2bbd61dbad570a659cd8ca8a08f698afee9ce1018377a02f9435a15ff47dff3
font_01_sfnt_off00006fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBE 10280 bytes
SHA-256: ab2a244d8794c6250a9afd5872f54926ead1085f7a2c97cb1badc23f0244263d