Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b93920eac064257…

MALICIOUS

PDF

89.6 KB Created: 2021-09-01 23:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e18edc37470fd3f2fcd8271344585262 SHA-1: d974ccd6e51e49c5c6a04219d3f521ddd03db021 SHA-256: 7b93920eac0642573d34dd2f06b655859aab30f4728a7339a9c2026ccba34669
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content hosted on these compromised domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9884

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 https://laborke.ru/uplcv?utm_term=the+education+of+a+christian+prince+pdf PDF link annotation
    • https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/29638949379.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1a867615e---vewisamikulojitepijevila.pdfIn PDF document text
    • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/leduxonotezala.pdfIn PDF document text
    • http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/natevedigob.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16085a142de766---vaseguxuxugid.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/1530524409.pdfIn PDF document text
    • http://becskeicsodajo.hu/admin/fck_upload/file/65913039356.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/12719027218.pdfIn PDF document text
    • https://itexpertdog.com/upload/files/54584765014.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160874809735d6---75464365579.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/jomapowas.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/zizetuzemazipetugufas.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ce862e8ae---laboxozedava.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/3a05fef2c0b7c92d2346d490db112e0b/4546078103.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/pemipedenubemokeme.pdfIn PDF document text
    • http://cityhigh78.com/clients/2/2d/2ddbae4fb74c169819b3574d76e4e264/File/79604650507.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/misenixedipudo.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/8807943f6244a997607f25a4c2c47f5b/gizasojexedidikosa.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/remogavukuz.pdfIn PDF document text
    • http://byecook.com/ckupload/files/remozi.pdfIn PDF document text
    • https://yodishit.com/uploads/userfiles/file/59546404539.pdfIn PDF document text
    • http://drkoopman.nl/cmsimages/file/nejubegir.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/g3kccv5qp95fk2k1n3up6jeib6/32288439905.pdfIn PDF document text
    • http://about-dogs.ru/upload/file/60045742329.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/vekipijasulebo.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/88e2f23676ee18f0cbd0c3dbef4b3d5a/lepumegakonuza.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

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_off0000f95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11171 10732 bytes
SHA-256: db8cb395cf7ad5b4f31e147982da517c90c228098a1d5775382c288f9d12bfae
font_02_sfnt_off00012a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A05 17400 bytes
SHA-256: 083471ad8561a3c8f483553dc022f687f9094a04f97b41ceef089998d060f9e7

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