Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0982aa09b896b3…

MALICIOUS

PDF

93.4 KB Created: 2021-08-14 06:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a807760f88d17870fc63600f22efcbda SHA-1: bd65906112a6b62d08fa408156986733d5e8ed74 SHA-256: 6b0982aa09b896b3b832dc257206a22bdd07b8a96186e466f0208ac8aba24bdc
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with many embedded URLs pointing to compromised websites, including WordPress uploads, likely intended to redirect users to malicious content or downloads. The document body is unreadable, but the heuristics and URLs strongly suggest a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://vieiras.pt/imagensprodutos/file/3096421074.pdf In PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/ae9t3ln7fqt3ktjln3sp7pbvo6/xekusipimuwafoxika.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/208qnlbqokquaqa8824l6ij3uj/madozul.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/sogaxodanoguwinef.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/49021931932.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077ae921e7a2---fevenakurekewimab.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/44103690824.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/rikulimevuzakit.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160affe0e7ebe9---kosuvasiwoxasivosizuwaf.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed7e68cd56---vamilenipimaberodafatedax.pdfIn PDF document text
    • http://naucseto.cz/storage/rozebuka.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/959lmb0mo3463jdj8q7fcumod8/wofafinuvesaxapisudun.pdfIn PDF document text
    • http://cdn.eagle.mn/uploads/userfiles/files/80567116730.pdfIn PDF document text
    • http://chemicalengineers.ie/images/99727363640.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/25b8dae31ea224d946fae3aba5858ae7/faloxoxamejer.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f517ddeb73f---96996838560.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210528091453124.pdfIn PDF document text
    • http://dailycan.com/userfiles/files/ronapumamogozuxuvafulax.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/c1fbe72e97a1383fc16a7047c7508cd8/zajozebarapuke.pdfIn PDF document text
    • http://veszpremlizards.hu/_user/file/pipelizugega.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad616869866---12455636085.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=como+saber+cu%C3%A1l+es+mi+nahual+aztecaPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5442ef1b26---nivopotivipixu.pdfIn PDF document text
    • 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_off0001067c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8E 18004 bytes
SHA-256: bd49b08331d276272d7055a50a5bb64df40b8c995a71993625bb6ff9764a6e57
font_02_sfnt_off00014ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BA0 11004 bytes
SHA-256: 3906d46d23642e9c839c6d7284c5dbbc07a544e10d3f5d9d9f9b57fc6742ba11

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