Malicious PDF — malware analysis report

Static analysis result for SHA-256 d332a77df1aed8d6…

MALICIOUS

PDF

81.9 KB Created: 2021-09-07 12:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 382616d52502793df3a3f8d109cdd785 SHA-1: d5ea0ddedfa6ace03a0e47c3a4517d2e2d536924 SHA-256: d332a77df1aed8d6255c2c7999ac5093033193cd359190d8e202265150b2d7d0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The embedded URLs, such as 'https://irlanc.ru/uplcv?utm_term=adobe+premiere+pro+pdf+free+download', are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://irlanc.ru/uplcv?utm_term=adobe+premiere+pro+pdf+free+download PDF link annotation
    • http://pokemom2.com/uploads/files/46313954109.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160800c0938a6c---32890691702.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609fbf3806e81---momasazadiku.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/mdmga2q336tlmd0ragccu3ma7g/duxidolawatoredalavenezi.pdfIn PDF document text
    • http://wellfoto.cz/pictures/files/81592881296.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/9d8886bd3cac7c0e202b2a61812b108a/jufezetekedubodadina.pdfIn PDF document text
    • http://vagtteam.com/userfiles/Files/fowejo.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/51aca40afab1ff9d0476e0d56020bab4/84309584286.pdfIn PDF document text
    • http://rujiahk.com/uploadfiles/file/54543928992.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/filajuzurop.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081cf65c5336---98399788601.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/addb696dd9a7d30e617276927e7ebb93/wiritanipowidajaku.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/73246234378.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/taloveborijoluvidoz.pdfIn PDF document text
    • https://monamifrance.com/FileData/ckfinder/files/20210904_6F43911B526BD281.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071827a3fca8---bonalilefenugetawabek.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/35899fba5b9e6f0bcd2d68d44194e050/67191784693.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/3dgivp1119d1nb927mcfji8suk/50527941029.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/faruloxu.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/55862665473.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c76dc01ee---91962204087.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160da4466d086c---78341223675.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_off0000d8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A8 19000 bytes
SHA-256: 3bd082723717b455d6827a25fea3e8057aaf27e87c96c9684d9de83213cb53ad
font_01_sfnt_off000109ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000121e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E5 10600 bytes
SHA-256: 42636b1df0fb3226326974bbec7351124ba46a501ab6ff2eedc58dd0fd577928

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