Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fb6c21dd9263f6…

MALICIOUS

PDF

80.4 KB Created: 2021-07-01 10:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 65507bef3f06f158c896ec02a7938e05 SHA-1: 2ca788bb899dbc62faadae86bba22d6b1364c75e SHA-256: 02fb6c21dd9263f66e27d0b7231cc3c3ef217c71720101c1520f0221054f23a3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness. Although no scripts were explicitly extracted, the presence of PDF link farms and the overall detection profile strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c98a5f834---16610539808.pdf In PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/jukuvaserudixufix.pdfIn PDF document text
    • http://westernstudioservice.com/admin/userfiles/file/35460377213.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/fusobalilezo.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/69117941906.pdfIn PDF document text
    • https://embassyinvietnam.com/webroot/img/files/1959020912.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/18920544599.pdfIn PDF document text
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/9530818673.pdfIn PDF document text
    • http://edgecs.net/documents/61965935356.pdfIn PDF document text
    • https://www.foundationofhope.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082e5f1d3041---tidakuwoxubuxejodof.pdfIn PDF document text
    • http://ruihuitax.com/files/file/46864115766.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/6kd8ftfqh9g6r1ltbrarvbj3hn/30450984502.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c15890974---48612012358.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e339e203e2---pexovirijijezofakasoguwu.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d840ed08e36---zisutofigepowadasap.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/14952583647.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/52277347239.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/81f7750e408012220a2f3d7563a2fb5f/kawotafarob.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086843639556---fogij.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/1d0f193eb25c978d0693e70e06cf0528/veguluw.pdfIn PDF document text
    • http://babamoleskine.com/files/file/54442324976.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/3204f5b663a29816d83e27ae048c3309/49884786646.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095558263e84---bimowipawebobupizisi.pdfIn PDF document text
    • http://asfalon.com/__files/file/gaworonopurupixena.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=wordly+wise+3000+book+9+lesson+1PDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 10920 bytes
SHA-256: 79a9598ac630ced7dfc5dc2cebfaed11cb4769846b59b230f7a07cc9f0f93c24
font_02_sfnt_off00010619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10619 17520 bytes
SHA-256: 8f260bb8cb0f87cf75a3ea5490fe09937516911825f2a961a621d90c878edd5a

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