Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ad7e3017aeaa85…

MALICIOUS

PDF

95.6 KB Created: 2021-06-30 22:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 416b7a16f62ee6a424c65bb3bfe829cd SHA-1: a1831b9eeea092cf768cc7c4a868619cc1c10bdc SHA-256: b2ad7e3017aeaa85f3beea016c303c9e1368e1f5e66875091edff86759f34eab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, suggesting it's used to distribute phishing content or malware. The presence of external URI heuristics and link farm detection rules further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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=types+of+irrigation+in+india+pdf PDF link annotation
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/6eomo9dshqp5fhe2pqm32afhm4/96617131483.pdfIn PDF document text
    • https://adikkeempat.com/contents//files/sejewuxawazet.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/e3a9e50e81358032f0017676c07021be/givakasuvolofix.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/goh8ohocsih7uk0cpis93hbcj6/12708843142.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/35696864253.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/jekusofekanekunop.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/qmaeouvmim4muu978af2ih39oq/guweridanexibixerikoz.pdfIn PDF document text
    • http://assistance.uz/images/shared/file/jivate.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/86323336747.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087973a2bc2f---lufosutotodimibe.pdfIn PDF document text
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc7ab8150a---piwekuvosuwawakujarak.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/gng03qr5m8jnpont0gs3kpu1r6/zakanipixerepexiwubuxatis.pdfIn PDF document text
    • https://silverlabpupsforsale.com/userfiles/files/75029213761.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/ah4h3k1tdk5kkt4tvib193du0q/92715615560.pdfIn PDF document text
    • http://www.hon-ro.hu/userfiles/files/gevikiwiwunovefegu.pdfIn PDF document text
    • http://stpetersame.com/clients/9/91/91902b33218228c9a3691be2563b71f1/File/84204655380.pdfIn PDF document text
    • http://erbamedica.org/userfiles/files/41826450556.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae538dc9956---liledonad.pdfIn PDF document text
    • http://broadmoor79.com/clients/864886/File/gujegeveziwe.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c300e993eee---fisasazunenorojuvolapar.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/luxopazamiwavugesav.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e16fcd1b4a---56814923402.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/12843805493.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cefb76b38f---xapixenipasivavunaxuku.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/wumofibijoxubodefopibiz.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_off0001154a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1154A 16620 bytes
SHA-256: 3838fe62c642b33fd93afe5ed85a71bfd6176cf52fd18adea1028ef120320793
font_01_sfnt_off00014067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14067 10704 bytes
SHA-256: 73a07ed57dd6df1d1acec9f299adadd3a701a9143f41e13337327fb9017fe745
font_02_sfnt_off000158f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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