Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d859514fe76abde…

MALICIOUS

PDF

74.9 KB Created: 2021-11-19 01:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 42cd97c2928d7017317701566ab212bc SHA-1: 816b536266c25831ecc736a376b3a84ef2c9ee6f SHA-256: 5d859514fe76abde9a6af9a6d0246eb8f2cdb5bfccaee2699fb80bc44a6fa3c7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://barsugo.com/ckfinder/userfiles/files/50529001889.pdf In PDF document text
    • http://studiofagiani.eu/userfiles/files/vugipopo.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/072d7d294c25962edaad3be093edf5f8/55322917263.pdfIn PDF document text
    • http://cuacuonductudong.com/upload/files/44070568368.pdfIn PDF document text
    • http://sieuthibds.net/images/files/sorexulo.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/62687249762.pdfIn PDF document text
    • https://zd-zeta.com/uploads/files/202110060736021666.pdfIn PDF document text
    • https://wspaperbag.com/userfiles/file/kivolikolujalomugoxe.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/56838922296.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/52046144435.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144c6628ad9b---pifiva.pdfIn PDF document text
    • https://kampusogrenciyurdu.com/file/dekoveruxo.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/govusup.pdfIn PDF document text
    • http://www.videobezopasnost.ru/ckfinder/userfiles/files/wufinufumidoziwuboze.pdfIn PDF document text
    • http://tdvvietnam.vn/webroot/img/files/81621339700.pdfIn PDF document text
    • https://gospel-streams.com/asset/ckfinder/userfiles/files/kovukila.pdfIn PDF document text
    • http://henanshuangxin.com/d/files/sifawexe.pdfIn PDF document text
    • http://dambi.pl/userfiles/file/76784590066.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/18480138026.pdfIn PDF document text
    • https://grootformaatspandoeken.nl/userfiles/file/moduzuxute.pdfIn PDF document text
    • https://fivetc.vn/uploads/files/65521708477.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff510d56be---3523106405.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/240f03f3585333500007373391c0060f/5498148526.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/HTGXzuRVGb4/uplcv?utm_term=ambulatory+referral+to+entPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC09E 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off0000d7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BF 17940 bytes
SHA-256: 36560ac3279983ae9fd9b53b0806bbfbe525cd1a05253cd52c8e19071d8c4d4e
font_02_sfnt_off00010653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10653 10448 bytes
SHA-256: db8b7f1c0acd857bb14308fa1e5464378626e13686b3ab7d85a0c4fe244fb5c4