Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d1b945f4d71365…

MALICIOUS

PDF

81.4 KB Created: 2021-08-25 15:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 96682394561bf386271e9e6037364ae0 SHA-1: e73e7244ba3453ad71b3d852b0154232b66ff581 SHA-256: 01d1b945f4d713659903de78f4b9b5897bec566bcb410871efb21d951bc61e3f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to multiple compromised websites, suggesting an attempt to lure users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://archism.ru/uplcv?utm_term=hold+on+to+your+dreams+poem PDF link annotation
    • https://amsteroverseas.com/ckfinder/userfiles/files/gugotoniseb.pdfIn PDF document text
    • https://imotrading.com/images/userfiles/zokow.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c60f0abb990---48107060824.pdfIn PDF document text
    • http://www.gulbaharsigorta.com/contentData/file/palezesililowumosigofege.pdfIn PDF document text
    • http://crediramasrl.it/public/file/93815802077.pdfIn PDF document text
    • https://cosmeticdermatologymiamibeach.com/uploads/data/files/64523750527.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/48721436449.pdfIn PDF document text
    • http://burningspearmarketplace.com/js/ckfinder/userfiles/files/68685702444.pdfIn PDF document text
    • https://yptea.com/data/fckeditor/files/80101041590.pdfIn PDF document text
    • https://promobryansk.ru/userfiles/files/luxuxugiziburidibe.pdfIn PDF document text
    • http://uptownfallschurch.com/uploads/files/62446842854.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/nejesefiwexofesamat.pdfIn PDF document text
    • http://phpirateboosters.com/clients/867602/File/mokejatoj.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021071303484846.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bd89a5ab9e7---wanajaliga.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/9b1eb89628344fa1c4c0cfb46ee77702/sudarudafojatamokikel.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/93457715627.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/euvo08s4q1qcd92rehf5840pgl/webujabujuxuxolux.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bc28c29b16c---dakijisa.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/161044aa7ce765---wenopeb.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/nitafeji.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/62034477041.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6F 10668 bytes
SHA-256: d986441fb06de13b4d9aead3bd7848ab805d4df362737f3edf726b76d4045cb2
font_01_sfnt_off0000f4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DC 16560 bytes
SHA-256: 905621c55e04494215e375f051ed913d5ebc8752dbcf48356573334fc5ca68b7
font_02_sfnt_off00011fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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