Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07daa3dcb4b8d63…

MALICIOUS

PDF

81.8 KB Created: 2021-12-13 11:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 297a7530ab8858fc0d3e03ffd05d7dc4 SHA-1: 74b7a5b9b147fb5eda2a0d5fa39bfc0e7bba2a40 SHA-256: d07daa3dcb4b8d6317ea15c6a87506300f8f9339149200440756a7486ca0b9d5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vicareyou.com/userfiles/file/wovaridaxowopozo.pdf In PDF document text
    • http://eco-conservator.com/userfiles/file/doligusirixisarapawi.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/205dddf2cc67797924f27395bcb3c767/15573800875.pdfIn PDF document text
    • https://crossfitbeeshark.ro/app/webroot/files/userfiles/files/13698321361.pdfIn PDF document text
    • http://familiehollander.nl/images/uploadedimages/file/13523726904.pdfIn PDF document text
    • https://myagenda.myagenda.cz/pictures/editor/files/kazikoperadusapedewu.pdfIn PDF document text
    • http://anninhsieuthi.online/upload/files/nurefemuxadimudusoja.pdfIn PDF document text
    • https://www.campacinter.com/image/upload/File/sepefiv.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/sqiv2slfjvn3iguqh10gc51e45/xijikorelokafivuviveze.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/2kksep5ihmmf1m5srun6ns7i32/kukulegowalisitofomavora.pdfIn PDF document text
    • http://szybkieprawko.pl/szybkieprawko.pl/user/admin/fck/file/93093120511.pdfIn PDF document text
    • http://kbfrutos.sk/images/_file/48269593665.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/20211026045388451.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/kageletapotajuguwukiwigu.pdfIn PDF document text
    • https://blv.by/upload/editor/files/77633687777.pdfIn PDF document text
    • http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/wadelan.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/fudaduwepagog.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161379e8a07b53---35256507019.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/48c8fa5aa333a14dee4d2ce7b416e38f/34371557605.pdfIn PDF document text
    • https://sausalito.com/wysiwygfiles/file/58707165854.pdfIn PDF document text
    • http://kcpsystem.com/userData/board/file/25680733746.pdfIn PDF document text
    • https://ripedesign.com/app/webroot/files/fckeditor/file/20078167965.pdfIn PDF document text
    • https://vizesblokk.hu/files/file/kenuwadamerudinuzemiwu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=will+ar15+be+banned+in+canadaPDF link annotation
    • 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_off0000d941.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d941.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD941 18704 bytes
SHA-256: 70f5aa528c1c3f8bf87816442952389c2dc600ff719a7f8b61f89ec5f4294158
font_01_sfnt_off000109f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00012094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12094 10296 bytes
SHA-256: 4af9d1811e1a354b26e88b5cd45037c17f460ec4cad92d82b5a26a068d44e7f5