Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccf2ece086526e1…

MALICIOUS

PDF

88.8 KB Created: 2021-07-15 17:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 976052e3c1c45f8fbea5943dbcf30576 SHA-1: 25c45d00a8d963986b750a49648918bf29107eb6 SHA-256: cccf2ece086526e1e3a42284b017b5ae178c7187e8f05de5d260f556cbffe46a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Several heuristics indicate the PDF is a link farm, with many URLs pointing to compromised WordPress sites or disposable hosting, suggesting an attempt to distribute phishing content or malware. No scripts were extracted, but the overall structure and URL patterns are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://chcial.ru/uplcv?utm_term=how+to+know+when+to+harvest+okra PDF link annotation
    • http://unseretochter.com/images/file/29126206831.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/234pbsooq9eltmuvb3e68883kl/tukorulavedikilutizur.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/lowotewawuzuvimurudos.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608094d6d53f0---mobonevuvuxipixerujar.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b590a6a6fea---javukura.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/joletevarekegodarowilo.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/37127602779.pdfIn PDF document text
    • http://jucal.es/images/file/jonexuzewoza.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/95650900670.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608456ba24856---81725060282.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/5r5adu0kmpqe9n6c8kj5vpbjvs/nesobejolixu.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021050900570729.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/zorasunetozunigegudikuf.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed15161e93---66421390809.pdfIn PDF document text
    • http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/95356597083.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/mubamebusujovipej.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/17907465542.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfa38c0f1e---69752146512.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/96129146220.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/98aa7e86537b5048b0869b7491c319e9/defume.pdfIn PDF document text
    • http://haphadoor.com/upload/files/wituxolizogafefagezub.pdfIn PDF document text
    • https://embassyinvietnam.com/webroot/img/files/96706653486.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/51bb70b43582b8608a430378a792c398/71203783576.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a647adbd188---81704243770.pdfIn PDF document text
    • https://fallsplat.se/file/87896822535.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_off0000fbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF9 16520 bytes
SHA-256: 5a0a9a442262ee273c728a0db198a5a574437921fe8bc070372dd8c139b31451
font_01_sfnt_off000126b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ECB 10304 bytes
SHA-256: d3f0561da9d46ddce8911e54ad6c52f3271fa16e94ec46b6152f4c149033ae0e

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