Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f523a15aaf725f…

MALICIOUS

PDF

69.8 KB Created: 2020-11-20 11:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-01
MD5: ecaf88dfbb9fe920511fe2ded932beb5 SHA-1: c7269afd92ee7878f54d3d3028f5da283bd89295 SHA-256: a4f523a15aaf725f6250f491036d2b8945beec01d82d5b4385f162db28e861c9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/wb?keyword=vedic%20maths%20addition%20worksheets%20pdf PDF link annotation
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/fawinikaraba.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/nuwelexi.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c632.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c632.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000fbdf.bin)
    • https://uploads.strikinglycdn.com/files/863361ae-6320-45a8-bd0b-28da4a7f7327/mobesawufasewagokoga.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/67366736853.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/arcadia_band_review_2006_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349a5376-3c81-4765-8180-5f6c60eb0058/48676127877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdbf90cd-bbfd-4625-b159-e93afd5c821f/86409739125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a5615f-883f-49b5-af57-351ae8dec186/jiwedimimobap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d90032f-dad2-4c6d-8d57-086a5946bedf/9912524097.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/21580026892.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/sipuva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd7bed0-8cee-43f7-b7de-40ff16e08509/61574881889.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 extracted file (font_00_sfnt_off0000c632.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC632 5272 bytes
SHA-256: d94ac1c6c27d67143833dcaa8aff6b1f6d574937ff9cad0846906d2e97ed0c99
font_01_sfnt_off0000d800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD800 10568 bytes
SHA-256: 0f413df222013de46359393253cd4607a7f332643db22f509a66a285bf9f1010
font_02_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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