Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec06dde4816325a…

MALICIOUS

PDF

91.4 KB Created: 2021-07-02 17:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 9535f1d64b4e30157c00271fa21175f9 SHA-1: 0e4a47177b7175701061f7865638416935152f7f SHA-256: 2ec06dde4816325a1307e233dae7fadef292855190426def90746c958abfe639
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS upload directories, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • 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.
  • 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://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160823715045b4---xajosuxatuwefewax.pdf In PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a54ccaa5345---suvoramoxora.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/a4f685e12b37afa422b2ce10147cea69/xegipe.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df36b713cc---26671179479.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6b0441a5f---85772855318.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/6m6akdvt35gddtn3g1es138hu5/36367124763.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16093e613a410d---zigirevutuwidu.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/52670177425.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160763c31be8f0---80328920570.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c1dec2489bc---mogugoxubokowenefi.pdfIn PDF document text
    • https://mauspro.net/upload/files/39988158369.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/wajumemolefatidosawoz.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/lc0kstg0jfdq9nscsjr6a841s4/litoxuvekite.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/361bf0a34c50a49260ae645bcb970d2a/74502801479.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/zoritukinufitoxawexava.pdfIn PDF document text
    • https://activepymes.com/pub/file/xeruraga.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/ik53bsh5s2u8etnpog1k74l1o2/vefipezonigotiris.pdfIn PDF document text
    • http://boxshop.mn/userfiles/files/vodebumasijuwitik.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801e971bf01---rosirovifenejizamit.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/fegelorilulixiwuxozoso.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/29756455679.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=hess+law+combustionPDF 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 17960 bytes
SHA-256: e9f5ecdc7bcfcec7c9ce838b0a7a0cd2e2edd56980e1d523dec42210f6cff487
font_01_sfnt_off00011af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF3 10608 bytes
SHA-256: 913ab0c13e2a4381ba4a2cdfe109057090929cb20870f506f176b4f8cbad98e2
font_02_sfnt_off0001333d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1333D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B4E 16088 bytes
SHA-256: 0e3d63f173342003c62a86c726d4d5a85e7f52d44cf06618766a4fa08a0866bf

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