Malicious PDF — malware analysis report

Static analysis result for SHA-256 467c9bf8a4ca612a…

MALICIOUS

PDF

91.3 KB Created: 2021-07-21 04:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: f208e274e4c6fd1aef5a5ec09ab025a4 SHA-1: ecbc25bc3d5465f261c83ea996222c5286d549a6 SHA-256: 467c9bf8a4ca612a9c59b3504bbaf978e5eec6df34a4391f0aa84f2eb55c354f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, several of which point to compromised WordPress sites or IP addresses, indicating a likely attempt to redirect users to malicious content. The presence of PDF-specific heuristics like PDF_URI and PDF_URI_IP_LITERAL further supports this. No scripts were extracted, but the overall structure suggests a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160f3ec257ab77---sexebeko.pdf In PDF document text
    • http://lucann.com/Upload/file/balapimokebaxikosujojip.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ebb6e5be2---50139742344.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/dejepogedilufufati.pdfIn PDF document text
    • https://childconcern.in/trila/userfiles/file/bopinezexesigafuw.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/xifezuveziwuwomavezema.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072fb1c89c1d---90650150118.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/d17dlt2os4336dg70uhji7a5t5/zowoxoze.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/6efe91cba3f3903acb90d537ba307822/zupemufafibapugasar.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/fituketu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607abbc78466e---sulimanop.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16085d340710c3---kobokajedixideketojitiked.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/73137478050.pdfIn PDF document text
    • https://aashianarealty.com/file/45670834927.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/0ec51fee027cd70b73d2a75ae4155c1f/74109311278.pdfIn PDF document text
    • https://machnik.net/ckfinder/userfiles/files/1382725349.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/4d99acf84c8ab8bf7632cc2c96897de5/mufizorekaseka.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/64056658146.pdfIn PDF document text
    • http://snsi.jp/image/news_file/velimotoranetanu.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/d1o9seajsu6r29lhddlcjq4p85/sowebowotovimejumop.pdfIn PDF document text
    • http://brukbet.com/user_images/file/paluraxetisopukanujex.pdfIn PDF document text
    • https://5uempat.com/contents//files/rawudejokutakikodeje.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/70334536853.pdfPDF link annotation
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/f9c1be0c3dff9ff24bc0e5fbf1002cf4/28773971098.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=time+management+in+project+management+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10107 10840 bytes
SHA-256: f66ef2226822269c9ed9ff9dd64a4f15db01e9f8884aa66d98377a09cc55f07b
font_01_sfnt_off000119c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C2 17516 bytes
SHA-256: 3cc6b2da3f03643e2b82a8591f2c286d5d808dd5191cf282eab864dea6c8ecf5
font_02_sfnt_off000147ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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