Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b9d0924d87bcba…

MALICIOUS

PDF

82.7 KB Created: 2021-09-05 14:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6ad6397e8886a44600cf5b0fc2268ad0 SHA-1: ee1e886ec2d1d1f598c2d89bf07226968ab34836 SHA-256: e8b9d0924d87bcbab65b28eeef24a235e3af0b2a903b6b578a0b0d8ffb29f4fc
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lure users to malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, so the attack pattern is inferred from the URL analysis and heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://chameleoncoupons.com/adgprocessing/uploads/files/95601014584.pdf In PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb1d6523b9---nofizuros.pdfIn PDF document text
    • http://mabo-meccanica.eu/userfiles/files/6764882397.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16124cfae07a0c---zobavizugeragureb.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/jatuhei0epq2kfp17vf7g0vhbn/77172048503.pdfIn PDF document text
    • http://citra.cl/userfiles/file/71288651551.pdfIn PDF document text
    • https://mollis.rs//files/vebevabixinotaxitakap.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/15541451583.pdfIn PDF document text
    • http://dichvugiayphep.biz/upload/ck/files/buremogabis.pdfIn PDF document text
    • https://elemonbg.com/Files/File/sexodadorinubatusererej.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/gigesotajapedizonalogovi.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/97765210590.pdfIn PDF document text
    • https://omprintandpack.com/userfiles/file/91590642761.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/44291852710.pdfIn PDF document text
    • http://lawyerstitleescrow.com/clients/9/9b/9b7cfcecb5e5abb6b877b2b1d59b4eb1/File/dozimenomid.pdfIn PDF document text
    • https://infoenergie-loire.org/userfiles/file/repagotadawafunaxumurifex.pdfIn PDF document text
    • https://clinicscrm.com/img/files/35607427592.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/40856197925.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c23e2de6b24---kaduzufekoluf.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609a205d45691---9315669178.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/70177637540.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/32400560577.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/9be6c32d118ab1006fad210d6d3ad9ab/rudugatezuwapitavorizaw.pdfIn PDF document text
    • https://xanbiente.de/userfiles/file/zatowuresof.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/34c043f55a020950ef8b376e70b65e52/xekaponimelotavow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=wedding+planner+client+questionnaire+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_off0000de59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE59 17628 bytes
SHA-256: 616ebd857b318f93117a73edb7c38cbcb6f972a427a5fc28d70bb5d7c8509b18
font_01_sfnt_off00010b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001237d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237D 11032 bytes
SHA-256: 3520eaf4fedada894f0bf107b9b7a4792fe624ef9f4927aabfa5356ed3f283ec

Open this report in the interactive analyzer, or submit your own file for analysis.