Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49b543e63b5414d…

MALICIOUS

PDF

90.8 KB Created: 2021-08-31 21:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 31a203c6544e74b26b7a59559be8537a SHA-1: 8bfe3dc166f4012435f6b97b0f2d01d6377eab4a SHA-256: d49b543e63b5414deb1ed5d1c8ced86739d7db5970c72fbe9af3193e6f617d94
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links pointing to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the overall structure indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dighakanchaninternational.com/FCKeditor/file/48057615986.pdf In PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/a5933a34091b43055e6afe420c53d687/kamifesaxikoxevi.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607994bcbf671---8069745507.pdfIn PDF document text
    • http://elpollopaulino.com/cenavarra_userfiles/files/13818043661.pdfIn PDF document text
    • http://spharma.ua/files/file/61097623532.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/99031847025.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/tikuletaj.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/jubabo.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b87b0a59bfb---vomevejobawutujowoxo.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/dc7c05119da387dfa2b16d0401176b63/55477679643.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/cp1rqir3qnk3j0rq1s50dqrhs6/59058704339.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/53323540992.pdfIn PDF document text
    • https://hagabb.ro/ckfinder/userfiles/files/zadilaraxerodaselimid.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/dusafod.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/japajavop.pdfIn PDF document text
    • http://chandigarhdatarecovery.com/files/file/68135566611.pdfIn PDF document text
    • http://silverleafspa.ca/clients/10619/File/kokegufabeboj.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082fc28812b7---dajanote.pdfIn PDF document text
    • http://myphamso1.net/uploads/files/kedojofajexazepimidopifi.pdfIn PDF document text
    • https://equalitas.es/userfiles/file/79469752216.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/eroumo6ifmedd99dpjr70rds5t/843037339.pdfIn PDF document text
    • http://cnp-inc.com/ckupload/files/bonolovilerapibojajaba.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/gewejejixexufak.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/74152785061.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=ungifted+pdf+freePDF 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_off0000fd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001155f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155F 10184 bytes
SHA-256: 458dd44fd9ddc8810cc80e4cae26fca1dee18bf51f90a05fbc5346ce95d71b38
font_02_sfnt_off00012c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C07 18600 bytes
SHA-256: 4d4b26c07ca9072a2b4962083cdb8c90d2aa7af9b1fbf517570a2f5968c56a10

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