Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd711701d778d8a3…

MALICIOUS

PDF

71.3 KB Created: 2021-10-08 21:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 6dcb4e39e3ffd73a0e0b72d682794004 SHA-1: 001b7b2e246d3fa778d954913a746546346d59fe SHA-256: cd711701d778d8a3fe340c5e57a21b9d32ac03fa3b47784ee2d86c68a7875011
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://g55net.com/webpagebuilder/ckfinder/userfiles/files/wivavov.pdf In PDF document text
    • http://www.pattyn360.com/upload/forum/files/83758870708.pdfIn PDF document text
    • http://taaltoetsvo.nl/userfiles/file/wuluzujufux.pdfIn PDF document text
    • https://natanashoes.com/kingkong/userfiles/files/88012632141.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///46430606779.pdfIn PDF document text
    • http://olech-rzeszow.pl/userfiles/file/55508937811.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/tadolevisi.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/92733359750.pdfIn PDF document text
    • http://patp1ryb.ru/media/file/fopalisofosuzidexuvav.pdfIn PDF document text
    • https://jphotographyllc.com/userfiles/file/89398276905.pdfIn PDF document text
    • http://s2ipower.com/survey/userfiles/files/72121735777.pdfIn PDF document text
    • http://secretsocietygroup.com/temp/vinney/HTML/userfiles/file/jalibibewex.pdfIn PDF document text
    • https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/pivadavomefeg.pdfIn PDF document text
    • http://skolky.info/foto/images/file/60560902556.pdfIn PDF document text
    • https://rotitelor.com/contents/files/19649430816.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfe8633d96---89252411410.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16146f459644e7---sujosekujanifubixijekuxim.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/84989932246.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/gixedotetuw.pdfIn PDF document text
    • http://mcutech.net/upload/2021/09/file/1630559048111907383.pdfIn PDF document text
    • https://specializzati.tecnaevolution.it/dataload/ckupload/67413605890.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ce9c1b2cb---mufaro.pdfIn PDF document text
    • http://seatraderhk.com/userfiles/44189960489.pdfIn PDF document text
    • https://www.canoe.ro/Extras/ckfinder/userfiles/files/91167388158.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=the+street+cleanerPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/26672329439.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 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_off0000b7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cfbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBC 10080 bytes
SHA-256: cb5ca8ac4047525b960b6bf84f62aac4db1b65ed07fa85f892b69505c532d491
font_02_sfnt_off0000e629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE629 16272 bytes
SHA-256: 216a49bea4d39ff9990c05a4b4d8a9ed2a922f935ee5e7b9ea989f32bdaa044b