Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e2b4f8235e532e…

MALICIOUS

PDF

71.5 KB Created: 2021-10-03 12:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 241df5400fbe5ed8880f32f756b3d44c SHA-1: 9026e5436f2808901ba0353818844c99dcc69ec2 SHA-256: e3e2b4f8235e532ece061c82130d299dcc0cad60fe5ddaf4f6d9f72d69520c7b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://labellebeaute.com.hk/ckfinder/userfiles/files/48154422310.pdf In PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/wukajozuda.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b707db5ae3---lesinixojobiwumizufivuvaj.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16144f29fedb56---lixokebofomizagubow.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/9c6398ecf9e0f488c6b84edf6db4ff6e/81235498340.pdfIn PDF document text
    • http://cartopack.be/Images/file/85535708634.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/rutubumevilaverubupubit.pdfIn PDF document text
    • https://gianlucabruno.it/dati/upload/file/risam.pdfIn PDF document text
    • https://trystsalonri.com/images/file/mexajesitapulenogum.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/nelazurewaxo.pdfIn PDF document text
    • https://takitech.hu/userfiles/file/xeworulexinuxawikunikejis.pdfIn PDF document text
    • https://support-trevianum.nl/userfiles/files/77904082114.pdfIn PDF document text
    • https://ikincielinmak.com/upload/ckfinder/files/8430394845.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161431a80000da---fidujogojurod.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/22275944401.pdfIn PDF document text
    • https://projetounificado.com/uploads/files/suziku.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/25171082370.pdfIn PDF document text
    • http://minipit.com/data/files/kunewodelanixififawaj.pdfIn PDF document text
    • https://kiaavcilar.com/upload/ckfinder/files/kenokuvepuxamuzubimegis.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/54825260339.pdfIn PDF document text
    • https://www.supremecaravans.com.au/application/third_party/ckfinder/userfiles/files/7192869379.pdfIn PDF document text
    • http://mywayrtk.org/userfiles/file/pebinanozupika.pdfIn PDF document text
    • http://techbis.pl/files/file/neteramewoluxudopupegim.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/40295831567.pdfIn PDF document text
    • http://belniig.by/public/file/zobaz.pdfIn PDF document text
    • https://tannhatviet.vn/upload/files/pujikutowaxobutix.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/74057089405.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=knight+of+the+black+rose+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_off0000b65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB65F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE71 15764 bytes
SHA-256: fb52eae228a13ca80e8c6e87cd9898b486f3c64861ad288d782faef423c73bbe
font_02_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 11124 bytes
SHA-256: 8671ec3acde0cf1bf0eee43a83014be29753a852884f9bc7a01deb6c46e4f3e2

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