Malicious PDF — malware analysis report

Static analysis result for SHA-256 2036806a96ea86a2…

MALICIOUS

PDF

85.9 KB Created: 2021-06-27 00:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4c0cafe3d75fe648ec794e485c7a9efa SHA-1: 41aee343d0492ee5f31213f12d0eafaf7906cbbd SHA-256: 2036806a96ea86a2ca824a37189862c11f17d348c4588b3d9abddd64d0e3608a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous links to compromised WordPress sites and other disposable hosting, suggesting a phishing or malware distribution campaign. The embedded URLs and link farm structure indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://irlanc.ru/uplcv?utm_term=radicals+in+organic+synthesis PDF link annotation
    • http://askort.pl/Upload/file/fetajekobagevetig.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be36d4adda---8485122249.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/8d345e2e0fe37f8673b6d4a99a0a40d3/motebupof.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/namijukeba.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb11c4edab---76517943766.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/923b9b310cf7bd9c0452e6d7a440d93a/tawojawibivoluwo.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/916b7005ebeaff7234fa1c7c7e15b09e/43338372417.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/figafolepid.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/jagoposisonimolotu.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/vezirikoxevovemasavubov.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/pudokunoke.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/32447349869.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/zofiletebujijibu.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/34454641c32175a631b7f3c115321bbd/90945042574.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/7a0dfcbc99b99384d19b3ad33247a594/biduk.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4ef3c4df5---84000361413.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/worivoketezijewarat.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc7d9028d1---21764455541.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/fa9260ccd09021a6fad2c54430154132/ninafadevu.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/dikisulodurumitofujakig.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8a352455e---kiseweluzupedavoter.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160813b6486905---43854365420.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ae1f764ea81---tozidikopidibidaros.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abee0b2d637---vujipevanujadadedukezan.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf76a26cae---48874794136.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_off0000eae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000102f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F3 18088 bytes
SHA-256: 76a2c04a7e690544da8eb6e8b45af4eaf2d0452130028a204ea454f7c6675593
font_02_sfnt_off00013185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13185 10808 bytes
SHA-256: 1c4c1de1906bbea05b571e58e2d7f1055b8b0474296ed6404f3eee596d3658c1

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