Malicious PDF — malware analysis report

Static analysis result for SHA-256 550cfe27261553eb…

MALICIOUS

PDF

75.5 KB Created: 2022-04-16 09:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 890f4994b618b49f30a7f58d6721a5ef SHA-1: 80bf332d3ee17297cf0667cad26177809c8a5ebf SHA-256: 550cfe27261553eb00b0ce24b3fe32982453b945d37b6b2033c5fc2b5ea9fc51
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yoyep.co.za/YmrXLWy8?keyword=samsung%20galaxy%20note%2030%20plus%20specs PDF link annotation
    • http://www.jindatunnel.com/up_files/file/68209999261.pdfIn PDF document text
    • http://soloparamideco.com/js/new/fckeditor/userfiles/file/83202194460.pdfIn PDF document text
    • http://westernvintage.com/kcfinder/upload/files/78965940842.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/64360895273.pdfIn PDF document text
    • http://kechengchem.com/upload/files/43793175560.pdfIn PDF document text
    • https://orangevelodrometrail.fr/img/uploads/files/bepugi.pdfIn PDF document text
    • https://reha.bg/content/upload/file/vukomibigu.pdfIn PDF document text
    • https://collinite.pl/userfiles/file/bitoluvuzagezidotezidile.pdfIn PDF document text
    • http://lingotranssgg.lingotrans.com/fck/file/40599316487.pdfIn PDF document text
    • https://www.varoslod.hu/kcfinder/upload/files/20167883477.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/48835749977.pdfIn PDF document text
    • http://cidadania23pr.org.br/ckeditor/kcfinder/upload/files/wugebapukusol.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/xoxirobijokujurumux.pdfIn PDF document text
    • http://alphanaturehk.com/userfiles/file/83692367184.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/jafefatepopubaza.pdfIn PDF document text
    • http://cncsprings.com/d/files/47337483912.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/86622232306.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c124.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c124.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC124 17164 bytes
SHA-256: cc96d6f9d4f3e590f49b18e2f3108ad3bc256ec3a395a791c73aa94929840d78
font_01_sfnt_off0000ee1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10632 11208 bytes
SHA-256: 4ef77551b30d7c601b600845c00d49f04289b9ac3eb690edc4daea0a8e9300b3