Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1249e12064e372…

MALICIOUS

PDF

86.6 KB Created: 2021-09-03 11:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 65eab9b731f0cfcf636a5b7297f5ccdb SHA-1: c4ee2e1d9a78c059bb01e16dd4869da166eb3884 SHA-256: 6e1249e12064e37239dcac7f4e28ba542e3eadf005b9ce632789d1977444200c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content likely attempts to trick the user into changing payment details or wiring instructions, a common Business Email Compromise tactic. Numerous external URLs were extracted, many pointing to compromised CMS upload storage or disposable hosting, suggesting a phishing or redirection infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://nomylo.ru/uplcv?utm_term=accountant+jd+pdf PDF link annotation
    • https://livredart.com/ckfinder/userfiles/files/pibabenatome.pdfIn PDF document text
    • http://catgarner.com/clients/873270/File/53037143609.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/v3mnlfrtdas329sieboc3enpru/25530670301.pdfIn PDF document text
    • http://www.larucheapain.fr/ljk/file/82258600725.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/jupitejezix.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/figugaxixow.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/jjb6mse8bd41cp087b0jbf5rkc/sinizujebig.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160f40ab704071---46083431527.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/kezude.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/56165269936.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/gusowibuboderikuzoxora.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/5ecfd8808dca3e1d69e20a941ab72744/vomatup.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/f5db5669b169ed864b7e42127baf9ea2/makelurewolonilek.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160754cc46d690---dikomepoluva.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/31465c64f859e20671f4440da1418528/95519510789.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d3efcad94---lelotejewamobaga.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/552e0c326b75513ba9e7e28e426c544d/godalijefupimozirapep.pdfIn PDF document text
    • http://teechart.com/uploads/images/files/90637067223.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/95448717112.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e7a9aa4e2---19377897799.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ba307f785---guxodovesedevijozid.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0e1e159ef---99034398642.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094578c8e7b6---lugifowaxexakujifetenud.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_off0000edd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD0 18392 bytes
SHA-256: f75429eb84f332744acb69816929790af6d22fffecae856937aa0d1b639e1b7a
font_01_sfnt_off00011d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D65 10284 bytes
SHA-256: 4e850e76873a6fd0ea60bd27c33b9a35941a113a61fa9e9949d4e8a737daa8fd
font_02_sfnt_off000134bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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