Malicious PDF — malware analysis report

Static analysis result for SHA-256 7760245141b8e825…

MALICIOUS

PDF

105.1 KB Created: 2021-06-28 13:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 0ea4ac0e7f3daf16b29a7b1c2c703566 SHA-1: 2a02dba2a7ede3195d3b0367cb96a817c7a99d58 SHA-256: 7760245141b8e82529c96fcf38948ca56dbfbae4182ca24250d98677dbbec5eb
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external URIs, many of which point to compromised WordPress sites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9682

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160c94fd15eddc---xevejepusifinezaj.pdf In PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/02qsjqg5jrtdjcrc6t1c965h02/56055250889.pdfIn PDF document text
    • https://otartufo.com/ckfinder/tartufofiles/files/13951165084.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/danesepebidagizenuza.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/vogixejojodavijatakafuzu.pdfIn PDF document text
    • http://abwingssuffolk1.com/uploads/files/suzolixib.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab58362c13---8738815262.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/wikitusemoxezusebifenajib.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b272fc20171---piridevapefif.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/45669677686.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2be71841aa---96038409878.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4d5eb7b0d---93394914037.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021051523352318.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2fa45216b---sinezufawibekivixubiriw.pdfIn PDF document text
    • http://santeh.md/img/files/zebedema.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/33971739847.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/nilokaweju.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086e257c4a09---35226164336.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6af8a98678---83079465100.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/vpvledi2b8ofk2mpp2gn94h317/rasuvolozav.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c28ee379128---rulilevizakopizupuba.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609742febe091---92554203748.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/43d663e4f073b3c9309c9ca1cf7bf2c9/18762756814.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077969693f59.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/buzobibudakoguxip.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/62632c10b80976a6ebb770533da4501d/wosawogexeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=canal+parshall+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE6 20380 bytes
SHA-256: 684aa13db59f3a78d9a0a898f9cb6382f354075087d72051ce65e52555aa3ac4
font_01_sfnt_off000152c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152C3 10184 bytes
SHA-256: 63b8a2bdf1dc67284faa5aea43f26f140250477cf41757860d19aeaafa93d8e8
font_02_sfnt_off00016975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16975 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00018186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18186 16100 bytes
SHA-256: 505f1f16fb057e2a34e7666bb0a43a50f2e0b7bc0033e59b70183295ac12d2e9

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