Malicious PDF — malware analysis report

Static analysis result for SHA-256 26267b9250da1be0…

MALICIOUS

PDF

69.8 KB Created: 2021-10-03 05:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: d2bc72c790f1fc94032cabd809c90351 SHA-1: 29fec94c367c62945c7b232e203c1de0fe491b1c SHA-256: 26267b9250da1be0d08bdac813cc29196e2bd234b3156a6472b0111027406f12
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to compromised WordPress sites or disposable hosting. This indicates a phishing or malware distribution attempt, likely using the PDF as an initial lure. The embedded JavaScript is a strong indicator of malicious intent, potentially to download additional payloads or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 https://laborke.ru/uplcv?utm_term=perfectly+competitive+industries+are PDF link annotation
    • http://xn--9i1b14lwsg1seumdzsx.com/upload/fckeditor/file/17246898294.pdfIn PDF document text
    • http://uralteplostroy.ru/content/file/11299446458.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/d7e94bb4e85b3022c2cc2c8bf09cf6d9/fixovifivizo.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee72797804---zureviza.pdfIn PDF document text
    • http://aviapartner.biz/js/ckfinder/userfiles/files/pudenilozuxuxukowopesuke.pdfIn PDF document text
    • http://pronobile.de/catalog/file/26720549116.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/97244561274.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16151dbe958c05---2862633971.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/61a796e70690a507ad38124f4d7a1f20/4895856200.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/lizaje.pdfIn PDF document text
    • http://es-iyashinomori.net/yamituki-n/uploads/files/43849344594.pdfIn PDF document text
    • https://inprovit.com/ckfinder/userfiles/files/75198100842.pdfIn PDF document text
    • http://newabel.com/ckfinder/userfiles/files/zonogeb.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/tagudatasegoxegepon.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/buripitixuxanola.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/47863780066.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa09131658---59771238605.pdfIn PDF document text
    • https://stgeorgedentalcare.in/ckfinder/userfiles/files/wivudilujaparawuwofe.pdfIn PDF document text
    • https://stabiactiv.com/userfiles/file/79920594309.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/d14f46fff5a7c773d97c4e24a3d4f469/24674217491.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7bcfc3c3f---97201072907.pdfIn PDF document text
    • http://ticketsperiodico.com/galeria/files/55715139649.pdfIn PDF document text
    • http://maychaybocaocap.com/app/webroot/uploads/files/39435871786.pdfIn PDF document text
    • https://www.scmsgroup.org/ckfinder/userfiles/files/96341463710.pdfIn PDF document text
    • https://idea-web.ro/app/webroot/files/userfiles/files/ripatadafovuxonu.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_off0000b26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB26F 11064 bytes
SHA-256: 0bf87cf82f7396fb75cc42b1fc7ecbd0a936a3e5c16b9381f39802a6ab2e6ce7
font_01_sfnt_off0000cc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3F 14868 bytes
SHA-256: 331550af3e408e5a8c877a1cd83eaab9fa4b75b08bae6655833fc65d2839d580
font_02_sfnt_off0000f162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF162 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.