Malicious PDF — malware analysis report

Static analysis result for SHA-256 732d940fba266a2d…

MALICIOUS

PDF

92.7 KB Created: 2021-09-03 22:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c644f27781ea2788838459b69b454637 SHA-1: c5adc9ef22c9abcce29a08faa6fef79e926144ee SHA-256: 732d940fba266a2da889bfbcf6ea79c898e9bb623b7e7b9d723731146152e96d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a likely phishing or malware distribution attempt, potentially using JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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 https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/9dd66e704d51185844ca990861c5c481/kosibojerowetiwaboxizor.pdf In PDF document text
    • https://shatalarab-llc.net/userfiles/files/bowokawofebitozimuxa.pdfIn PDF document text
    • http://ellev.fr/upload/files/88184705675.pdfIn PDF document text
    • http://hotechike.com/files/files/80007557267.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/mezufisamivizuzoto.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/41f1a579440f02e63a3c7c7bd2c5b91f/kegasifuxukeso.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/3f822e8d4fb8295d1f07760b5afa313a/nesigevawoku.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/5jg3p2u7uum9b8hobe9emdi7sb/94946118954.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/4212994919.pdfIn PDF document text
    • http://prime42.ru/userfiles/files/37647070952.pdfIn PDF document text
    • http://sapaelitehotel.com/webroot/img/files/zetimowikaleb.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607580ffd4fd8---setati.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/37596924319.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/vawapadonobusomexa.pdfIn PDF document text
    • http://camptagola.com/clients/66689/File/79284838410.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081fc4e03c0d---63303373076.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/masune.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/rpkiad65t9ill65998nlemfcjm/40032878661.pdfIn PDF document text
    • http://ozcetinler.com/userfiles/file/kojovojuden.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/paronukefuvino.pdfIn PDF document text
    • http://inspirationforexcellence.com/clients/66491/File/34470529981.pdfIn PDF document text
    • http://crisismobile.com/ckfinder/userfiles/files/legibujamifexodovuzorawub.pdfIn PDF document text
    • https://epiphanych.com/images/file/zaruvidirifeto.pdfIn PDF document text
    • https://rdw-wolf.de/backend/ckfinder/userfiles/files/vudawibefuvibujekijegemon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=list+of+all+countries+in+the+world+with+flags+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_off00010474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10474 11044 bytes
SHA-256: 8afe14fd5c9ca7b6cd986aa1bcf5b28cb2c7bb7844bde548dbe97bb04e603f06
font_01_sfnt_off00011df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF6 17944 bytes
SHA-256: f28c5a2d9dfce42261d4fa1806b48880cf47e96084aceb2305d4d7febfbd902a
font_02_sfnt_off00014cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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