Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa085f9105808927…

MALICIOUS

PDF

85.2 KB Created: 2021-08-23 18:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9e3ed00f630867d199806c978da30fd4 SHA-1: 7c9b62527609438cdee44b6186b6a92000ccc8ee SHA-256: fa085f91058089272d587340f7fbfafcbaef20864850eb4a4d12492363d31566
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous external URLs, many hosted on compromised CMS uploads or disposable domains. The primary purpose appears to be directing users to potentially malicious content through these links, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://agnieszkapawlik.com/userfiles/file/kosekeruxiva.pdf In PDF document text
    • http://kmkonsult.cz/userfiles/file/67095186424.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090caa0e86e9---73942824564.pdfIn PDF document text
    • http://cameralehiep.com/hinhanh_fckeditor/file/84340508631.pdfIn PDF document text
    • http://www.hcc-cpas.com/siteuploads/editorimg/file/3753622515.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/94665292860f6ae5385a79.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/molumopogopegamugen.pdfIn PDF document text
    • https://nyirfa.hu/uploads/files/69943101398.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/4ccf93043c13ed540de2621caf2b6ca6/11316014511.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16072ba5e2d95c---22636043760.pdfIn PDF document text
    • https://bobecoingatlan.com/uploads/editor/file/jigotifupudawameg.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99deaf09f8---88129436137.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/145849975fa294f4588736dfb5b889c5/gawupojaturopokireludon.pdfIn PDF document text
    • http://avonsteel.com/UserFiles/file/77205908177.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/temenekifewiv.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b82f11be1f---gabetuvirogisujasogiviw.pdfIn PDF document text
    • http://jcbcharpentebois.com/ressource/site-image/files/9415601240.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/4a289a4f55c12806897f66f110f3a15b/42283918772.pdfIn PDF document text
    • https://cutandcolorparrucchieri.it/file/54047935709.pdfIn PDF document text
    • https://soudurelauziere.ca/upload/editor/file/43287662771.pdfIn PDF document text
    • http://ugrctrani.it/userfiles/files/60027735851.pdfIn PDF document text
    • http://badaranquehablar.com/userfiles/files/90830429990.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/94480246149.pdfIn PDF document text
    • http://www.kotolantopeni.cz/files/kofusuwemalimuz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=infection+misdiagnosed+as+ulcerative+colitisPDF 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_off0000e774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE774 16880 bytes
SHA-256: 9c6c19907a6bda8034923abbe105e40609f0997ee6e3208a4c7835a4eb294667
font_01_sfnt_off0001138c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138C 10936 bytes
SHA-256: 9b5143e2efd29b032e8fb3d72f93cd977ccd9c4e7b3e8b0149adacb4f1f0c160
font_02_sfnt_off00012cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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