Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7716d8c3dba89e…

MALICIOUS

PDF

93.1 KB Created: 2021-09-14 08:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 3b67184e9048fd02d9a4d2284051e3d0 SHA-1: 1cff60bc36c973cb1b11c5d7396c9a9e83aaaf6c SHA-256: cd7716d8c3dba89ef48edd165a27eb318d7dbb2a42e08b7b5843ccf1d0b80a93
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ichapps.com/ichapps/ckeditor-ckfinder-integration/uploads/files/lazibekakisedasuva.pdf In PDF document text
    • https://ezokniga.com/uploads/file/78856130779.pdfIn PDF document text
    • http://orem.mn/uploads/files/6630021333.pdfIn PDF document text
    • https://leise.ru/admin/ckfinder/userfiles/files/muridorobiduxojim.pdfIn PDF document text
    • https://autoskola-scp.com/files/58577282888.pdfIn PDF document text
    • https://i-intelli.com/ckfinder/userfiles/files/mesuzol.pdfIn PDF document text
    • https://ud-hobby.com/images/Upload/file/zafanujozemajebukogixeko.pdfIn PDF document text
    • http://maschimaurizio.it/userfiles/files/24723964013.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/iaduekmaolvsgtceqn2h18uge6/71306241239.pdfIn PDF document text
    • http://toyotarent.hk/FileData/ckfinder/files/20210909_2AB9C2607A9ECBD7.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/8740805019.pdfIn PDF document text
    • http://huucodatlanh.com/userfiles/file/bojegubaxago.pdfIn PDF document text
    • http://studioferrato.it/userfiles/files/97870994793.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/58784041198.pdfIn PDF document text
    • http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/81437352191.pdfIn PDF document text
    • http://sineadstone.com/userfiles/file/11838721067.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/20230441476.pdfIn PDF document text
    • http://liceoadultos.juniorcollege.cl/userfiles/files/86283418309.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1613cf4dd12056---45046320310.pdfIn PDF document text
    • https://rinducm1.com/contents/files/kitiwojapabivi.pdfIn PDF document text
    • http://prompol.com/media/file/933725954.pdfIn PDF document text
    • http://poliinc.com/upload/files/21019045155.pdfIn PDF document text
    • https://artbynela.com/uploads/file/lururupewomogozeti.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/d8b64scnbmdqgijcqofdj7bll3/22193760449.pdfIn PDF document text
    • https://projektovanje.info/userfiles/file/44768089610.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=osu+stream+apkPDF 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_off0000fb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB58 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001136f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1136F 10268 bytes
SHA-256: e603e1d9151e6802b843369d27b69cb53aeffed9df7669186cddf69802c68b7e
font_02_sfnt_off00012aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAF 23080 bytes
SHA-256: 525266a8e7923f1e80f8692091ff2d085d0bba39df680097ac3fa7b080e468ec