Malicious PDF — malware analysis report

Static analysis result for SHA-256 847dcc3608f9f026…

MALICIOUS

PDF

80.5 KB Created: 2020-11-18 18:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-05
MD5: b37a2ee355abd4b9772c3d5e84b81465 SHA-1: f067d2eab2e309a8c7848905507d048ee920c251 SHA-256: 847dcc3608f9f02651eb3a86e26e63cbad82bd8a5794dc30d47418e25bdbd3af
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffi.ru/strik?utm_term=olympus+omd+em1+ii+manual In PDF document text
    • https://kotonimurapuva.weebly.com/uploads/1/3/4/4/134440920/worawolirosa-nurajikofo-fadevixosemipoj.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/vukumimolepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f87dc20ea62d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_5fad887e51ddc.pdfIn PDF document text
    • https://jokepalebaja.weebly.com/uploads/1/3/4/3/134360350/2148139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380393/normal_5fa5e1993e134.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/british_thoracic_society_asthma_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/torileposibefazof.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/5791370.pdfIn PDF document text
    • https://purowuma.weebly.com/uploads/1/3/4/4/134472698/db56c6a.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/lujixorusasirerigofol.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000f77b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000f77b.bin)
    • https://uploads.strikinglycdn.com/files/35bdbbac-3b24-4be7-b50b-520c00a26c9e/2564862996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f2928c-fb24-4086-be9d-fcbc232c6777/magemumadoxakuwojukolat.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_off0000f77b.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77B 5192 bytes
SHA-256: a9b600b8e5e5ff8f50d73880a0b655c368d06cf16fb5d675b037db89fb9dda81
font_01_sfnt_off0001091a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091A 14636 bytes
SHA-256: 07963000ebaf114cd5b0296ad054857a53f68758e46998a35b984ec935b9cba1

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