Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bde65e925d55b7…

MALICIOUS

PDF

55.7 KB Created: 2020-11-06 01:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: b478cd998573c33aa06b31fcb1086e38 SHA-1: 32c96bf56128a93bb41bfb027031a6d9f0e938cf SHA-256: a8bde65e925d55b7581908ab3e43e3bd6bc5e80f1e21e5627442a988c60743d2
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/strik?keyword=maslow+s+hierarchy+of+needs+theory+criticism PDF link annotation
    • https://s3.amazonaws.com/mazugezijap/bps_school_calendar_2020-21.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/doflein_method.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/94bd59e.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/83434954294.pdfIn PDF document text
    • https://kaxokotul.weebly.com/uploads/1/3/4/3/134380066/3884224.pdfIn PDF document text
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/4402638.pdfIn PDF document text
    • https://sonilotosoj.weebly.com/uploads/1/3/1/3/131379329/1163317.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/norwegian_breakaway_floor_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/arabic_to_english_app.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/sitapewejosugiw.pdfIn PDF document text
    • https://rutedidatares.weebly.com/uploads/1/3/4/4/134490949/xogitewedenape-jekevotim-maxuveratol.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000099c6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000099c6.bin)
    • 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_off000099c6.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C6 5460 bytes
SHA-256: 23346c709463cca99810c418684bc1dc3144105409c74798bcd7a1ba3930f343
font_01_sfnt_off0000ac54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC54 10892 bytes
SHA-256: 12a2183b0fc9543babfa211f9a1b993d00791a76fc94f8c803b105f71e239147