Malicious PDF — malware analysis report

Static analysis result for SHA-256 7665ee999442260f…

MALICIOUS

PDF

80.9 KB Created: 2021-06-30 23:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9ab1079d40081e0c5e9c4e995278fa9e SHA-1: a1a5d1d54fccbd804a05f1c62ffdaa73c7733026 SHA-256: 7665ee999442260f5f406e93b2a59bd7a1ad77fdd010630e2d20c623e4b0a8f8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with many URLs pointing to compromised CMS upload storage, suggesting it's designed to redirect users to malicious content or facilitate further malware distribution. No scripts were extracted, but the PDF structure and URL patterns are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/eb95e258388e33dcfb3129fee7dd571d/sugixupok.pdf In PDF document text
    • http://eko-inwest.eu/upload/file/49855529753.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/f049cf4f5a8188e27fe26dabe4d3416f/kunaxesizej.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/7lh38osmqpcvcuuvt3v6qgg861/81397185560.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/1163124984fa7498e834c851c997a068/6699451552.pdfIn PDF document text
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/tuwufubawapofekedalozel.pdfIn PDF document text
    • http://htygroup.com/upload/files/44640941315.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbcf0ee37d---12649231457.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160738864812d8---wonivozidigidutapiwotosif.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///35256128918.pdfIn PDF document text
    • http://jarosi.hu/files/file/jinikavobelikumijapipumo.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/53350455401.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/of4t1jtbbjcvq1db55hics26h2/fizuwelokobizugedoru.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/a28cefe380b3b62f1833a5d982a7cc66/nanuraz.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/3ridkpd5eisdtne9g6k543vc00/kejopalisaziwiluli.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608684e30e1f8---28152959863.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/85284303583.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a79df6bd36a---62487251199.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608598349eed2---nelizamapukomoputu.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/bozikudolenim.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/nenuridekorevita.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608970902a18a---64857597003.pdfIn PDF document text
    • http://massageindex.nl/images/uploads/19118335924.pdfIn PDF document text
    • https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/duzoladuzawobiziwudurarar.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4d5db37b7---wulegokobet.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b2b3e76c5---32679708893.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=convert+two+images+to+one+pdfPDF 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_off0000d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 10980 bytes
SHA-256: b610576ade6d2a90a49796c486c5285dbab187a90bab6b7fed5b0d8c5a004460
font_01_sfnt_off0000f22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3D 16812 bytes
SHA-256: 2d603eb506399338538888f8f1b029e5d8a2e727951144c5959aa79d6ecbf7cf

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