Malicious PDF — malware analysis report

Static analysis result for SHA-256 128ac76260b415ed…

MALICIOUS

PDF

92.0 KB Created: 2021-08-07 14:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 04317e64eaaed60d15a8fcef00c5774b SHA-1: ed1cd8825dfabe3192ac2006f06ee0d5aea642d4 SHA-256: 128ac76260b415ed39da78b08c47049fa3992aaf2e3d12d5a3babd168f94711b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farms indicates an attempt to lead the user to a potentially harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160838eb36ed14---xoxebobewelevuwor.pdf In PDF document text
    • https://mariapolis.es/ckfinder/userfiles/files/87153878246.pdfIn PDF document text
    • http://axwelindia.com/uploads/19152932278.pdfIn PDF document text
    • http://locthanhwindow.com/img_duhoc/files/95403737705.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f377c93cf83---wavus.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/tukitav.pdfIn PDF document text
    • http://evolutionchonburi.com/userfiles/files/80903403262.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607eab007af07---58833184377.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/24115e157e1b412693139d29e33f9722/fumexefenejarekelilafoki.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/b1d65eb78bf53bbb8028b955c970b102/81437828854.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/5b0d5829af6507949852d5e8c10aa54a/70235824316.pdfIn PDF document text
    • http://atraba-holding.com/userfiles/file/68031547819.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///35942662895.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/a2ec52017521a7200429226b0ac5cff5/zefaxadalarazox.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/46754880538.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daff75d58b5---taxigexogikivuzokiviji.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a7ea8cd75ec8ad92334ace836f6ce611/vivefuvo.pdfIn PDF document text
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/20bd8b114ee5bc4d66fce88983b901f3/1446626089.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/95397470543.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/samohcivt5dtrqk22f13ai28vh/nizonax.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160d79a7419268---74078464560.pdfIn PDF document text
    • http://7tec.ru/userfiles/files/lasidaseziziwinedigefowin.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085615fc01d3---72642112676.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7cff3076b---jewekete.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097afb34ed3d---88742492939.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=worksheet+4+the+composition+of+blood+answer+keyPDF 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_off00010132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10132 11388 bytes
SHA-256: 39c92530f6f7b7e0ad3cc756c73ce0b75b8bdbd7788dd4726990ec9279232e1e
font_01_sfnt_off00011bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000133d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D1 16864 bytes
SHA-256: 54d8851a3895cf8ea593d8ef08bdb03fa4d77964a1225f8e33459a0f647cc7f4

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