Malicious PDF — malware analysis report

Static analysis result for SHA-256 01bd36c64bbd4515…

MALICIOUS

PDF

88.8 KB Created: 2021-07-15 23:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d8566385426afe487895b86800062731 SHA-1: d7e546e1f0cbe38bdeddb032b9950ccf1707a1d2 SHA-256: 01bd36c64bbd4515ca103fdca856c94fc124c7ca879f8fff5da6caecdfbf76f9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the PDF structure and embedded URLs point towards a phishing or malware delivery attempt.

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 http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095ca385e0a5---22197408587.pdf In PDF document text
    • https://bhsbeacon.com/FCKeditor/file/53478747942.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16090143caf5bc---zukuzuposurexenorezesono.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/zifatomesefojevonuge.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/et0vvt4adlsbt9go7s9fg538iq/tiwizafenewigo.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/gia5uojnd0lcql20f25baat7fq/jirivonetebelikog.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/gidixuzazotatatap.pdfIn PDF document text
    • http://debden.org/userfiles/file/fumazababodironatelepo.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/6b97a9a4413f4ec06502d0bece9ac1c0/35379117086.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bd944514f72---fexaxowuzovu.pdfIn PDF document text
    • https://local-atlas.ru/userfiles/files/73978299740.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160c8deff1408a---ruxesukogutifoju.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16089595ecd62f---pegijixobafokaviwaxosu.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/vogomawakozaroluzo.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083393eef112---tadizitavajofuvuki.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021051503282387.pdfIn PDF document text
    • http://www.toeterloeh44.de/files/48047448481.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/80f3bd3d4a7a0a8efdcf66de4eadb5e0/resated.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/teremeze.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/45a3cf213b94b5f1b4911c988d95941a/tepedasanavota.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/a150360fbcef26f64189889ccb70625e/15304570399.pdfIn PDF document text
    • https://michelbarbot.com/upload/files/80527572365.pdfIn PDF document text
    • http://suseefinance.com/userfiles/file/48174599078.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ab398979d58---40462888161.pdfIn PDF document text
    • http://www.themixchange.com/userfiles/files/wepalikati.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=sonic+the+hedgehog+2020+full+movie+downloadPDF 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_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD7 18068 bytes
SHA-256: cd13dd812027faca74c59da48dba1a26980ed63e4cc3d50e633cb4b14d6b4ce2
font_02_sfnt_off00013b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8D 11224 bytes
SHA-256: 6cba0dc6ddc2512df7cd2bc1edaf735e5d860b03684589cf86beba3616341eb1