Malicious PDF — malware analysis report

Static analysis result for SHA-256 552884aee820bea1…

MALICIOUS

PDF

139.7 KB Created: 2021-12-06 08:15:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: a71f29a1463d498577382c63fe1e635b SHA-1: c8eb13c2f03e119f7076be9ed5a0b9e42418c18d SHA-256: 552884aee820bea1be2655dacfc3748afbf23e4d35018466716060711ea0c559
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

Heuristics 5

  • 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 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 http://bluebossa.pl/files/file/refokavukizemuf.pdf In PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/tejozezi.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/16993505924.pdfIn PDF document text
    • https://ww150003.linebot.net/upfile/files/20211120201401.pdfIn PDF document text
    • http://gusanhightec.com/userData/board/file/46629379855.pdfIn PDF document text
    • http://husplaza.hu/editor_up/xezepi.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/79709587798.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ada3a242b20---nefopukab.pdfIn PDF document text
    • http://qzgj.cn/upload/file/33254731596.pdfIn PDF document text
    • http://inannamsao.com/uploads/files/12167834249.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/gakarulugativa.pdfIn PDF document text
    • http://poketomecam.com/uploads/files/difakujenesavike.pdfIn PDF document text
    • http://locke-3c.tw/uploads/files/202111131421045339.pdfIn PDF document text
    • http://japanbizkorea.com/userData/ebizro_board/file/dopup.pdfIn PDF document text
    • https://textosolutionslinguistiques.com/upload/editor/file/titafuputosururidusekevog.pdfIn PDF document text
    • http://nage-z.com/ckfinder/userfiles/files/vofoxeguzujube.pdfIn PDF document text
    • https://uat-tunisia.com/userfiles/file/98365239892.pdfIn PDF document text
    • https://exclusivelimoservice.com/ckfinder/userfiles/files/wedekixemododolonirufo.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/sakorowipugafejapagapanuw.pdfIn PDF document text
    • http://avtokapriz42.ru/userfiles/file/2571239044.pdfIn PDF document text
    • https://linhquan-group.com/upload/ck/files/66067484052.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/56731934727.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=strike+force+heroes+unblocked+games+for+peasantsPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/tiff/1.0/In PDF document text
    • http://ns.adobe.com/exif/1.0/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/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_off0001bfc6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001bfc6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFC6 11476 bytes
SHA-256: d08d0553c0029d1fa2cf9f87602c2a1d8d4a145d1a16028cc4891837d53ddcb0
font_01_sfnt_off0001da42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA42 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0001f0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F0E1 18000 bytes
SHA-256: 1db4974b00d2eee8ef751918ad26ccfc3388a3283fad85b87ced36d9a3c54d60