Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7fc74b35c8bf47…

MALICIOUS

PDF

85.3 KB Created: 2021-06-29 15:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: f0f9c3c989bf88c671cb2a15a205e77f SHA-1: 32c56d0a6a801e3e31c0b4031d7856a7c1390342 SHA-256: 6c7fc74b35c8bf47d4e06e8e51e31020fe474308fda245dfb3fe2b33dc8aa852
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the link farm and the PDF structure suggest it's intended to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/09f1f4i2ganps96h0hf4v18o54/sezinuwarepoku.pdf In PDF document text
    • http://vietthanhstone.com/images/news/file/41799704792.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160869cbed91e1---zuwofusaxapixowefanowege.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/paxutufalobad.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/ac811ba53a8b2a94f25a77f55dee4694/gubagewujukonumaxukud.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/negvvj8b5akj2tf3v1jjm06aif/29414296045.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/2m4ho5fm0k6k6k6njni92ucusu/naxapudodegisowudoxu.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bde24ea656e---82154783344.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ecee61fe9---zibesokewoduvuvagewokexo.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607da6ad0927f---69423047121.pdfIn PDF document text
    • http://cuatudongnhatrang.com/uploads/files/68586946274.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/ir0jg6btp025jhuv4kb8ghole3/65072409249.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/9fc61248db58d9316fedac059a8dacef/xujuk.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/71111912382.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160afdcfdcfbe9---modetenifulotarumi.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072b41c8b071---33465120718.pdfIn PDF document text
    • http://highlandlynxotic.com/clients/7/73/73cf6ae24f8ea70eb1cbac1dff6b0f9e/File/wevanifer.pdfIn PDF document text
    • https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0e40eb2d7---vigoxososawedova.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/gupuvixenoditonoxajel.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/zuwojulofifa.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608658b836571---76979637379.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/3d10d4a1c12f22ca1bca1634ef94a5dd/47168227416.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe19b90889---49168446186.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b349cb17d---wolelefabuwodafob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=main+function+of+nervous+tissuePDF 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_off0000ed65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED65 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001057c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057C 10440 bytes
SHA-256: 128e6337e4ac101feeef1b277e13047c885775d8f46a0ef1665c89d48325b458
font_02_sfnt_off00011d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D60 16336 bytes
SHA-256: 8b923a69ece099dd6cdb31cf98cab4e52d3358e43c477a47a91c2cc5dd063f9e

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