Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd7ef5b4b807b02…

MALICIOUS

PDF

83.9 KB Created: 2021-10-06 18:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: de271df7c0afb238c71d25dedcfdfdf7 SHA-1: e2b82b6feaf8e98ecda35f69fa62697ffda17352 SHA-256: 3dd7ef5b4b807b02b1aebae1247d4594958d3bc2e92a3c108e0e82b3769d15b3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613c64032d6f0---78014026701.pdf In PDF document text
    • http://lotusburbank.com/uploads/files/35557859607.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1615816625725c---45420877043.pdfIn PDF document text
    • http://fazendasaojudastadeu.net/fotosempresa/files/nuwazugukotanatad.pdfIn PDF document text
    • http://webs123.com/userfiles/file/28981248505.pdfIn PDF document text
    • http://bakineshr.az/ckfinder/userfiles/files/fezojijalelaxelipowuruwuj.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/rolabelezerogisokone.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/duwepikixamezaguwofogewe.pdfIn PDF document text
    • http://xy-interior.com/uploads/files/202109062138223853.pdfIn PDF document text
    • http://dija.lv/public/userfiles/file/jijuluvubewowop.pdfIn PDF document text
    • https://www.auto-ecole-rive-droite.fr/ckfinder/userfiles/files/xasafiwakotam.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/1148070177613d05b2ee156.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/zeguroxazi.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161539aa162af4---nesovometatalibosezup.pdfIn PDF document text
    • https://mcorretajes.cl/upload/file/98290023065.pdfIn PDF document text
    • http://france-ex.com/images/blog/file/45000989189.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/40336299723.pdfIn PDF document text
    • http://bluecreator.biz/ckfinder/userfiles/files/80684470865.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d0bb984df6---zuxulefumaxukaliwinosu.pdfIn PDF document text
    • https://namdolove.com/FileData/ckfinder/files/20210909_27D7350BD1FE1ED4.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20211004193353.pdfIn PDF document text
    • https://dusunceokulu.net/resimler/files/55503009000.pdfIn PDF document text
    • http://spadhotel.com/basefile/spadhotelcom/files/69567720928.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=the+meaning+of+anaphoraPDF 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_off0000e28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000faa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA1 10456 bytes
SHA-256: 56764fa53023f03f53da0e51458d998a455b37f4819da5b2b92658e652300386
font_02_sfnt_off00011217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11217 18836 bytes
SHA-256: 565ca59d5a46a233c7608435c0509336b8101ae7ac52bdc9e5fccfc32b5fdeb8