Malicious PDF — malware analysis report

Static analysis result for SHA-256 f291204b414a8b06…

MALICIOUS

PDF

95.0 KB Created: 2021-07-24 19:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 0b451553d36b1851e16878a5725ff520 SHA-1: 2fb11d7a6d28455362b57285159d1760f3d3dee5 SHA-256: f291204b414a8b06d93b9152d31212b7f9df609349ab369cec081fd6abc3e0e0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://teaandtiarasottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/3528244525.pdf In PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/d23cf645fba6f82f68e5cba4e368ee79/notexokopozipuvemuba.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e5902de7a---xakasazema.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/zorozulukodemaporivano.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/71c91e3f8e535a6f5af3e907b9c89522/33962407074.pdfIn PDF document text
    • http://newgrids.com/userfiles/file/vejixararum.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b47159ef386---sanuvirizadoxufipafet.pdfIn PDF document text
    • https://moolans.com/uploads/files/xagimibepusesimelil.pdfIn PDF document text
    • http://fiumevivo.it/userfiles/files/bisiwukoj.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1608600eb24987---basasevunibefona.pdfIn PDF document text
    • http://szolnokepul.hu/userfiles/file/fajerifadofogezem.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adf07658335---morelukemufezaririjagewi.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/20216101950296608.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/19060431223.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/9a6bepr7it3ghs8o8nspqhp0q9/34318884280.pdfIn PDF document text
    • http://pitafest.com/clients/1/13/1337b7689af00ddd847345d48bd720ff/File/getux.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ac842328d52e2bd70265a04538430454/74137235047.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/vomemol.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16072c3721784f---jolik.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/3fcd1be079563b48b1d0cc5685cba480/96633026119.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4db67d9a2---97529114570.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160aad837b527b---46934225815.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f80eecadd2---34838362298.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=notas+musicales+para+piano+canciones+cristianasPDF 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_off00010f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12730 17872 bytes
SHA-256: 2eba255a930b5ad16772459cf448a6ced990388258f5e8623c6d690d800af6a7
font_02_sfnt_off00015499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15499 10612 bytes
SHA-256: 78d3f0234f99b11d96d4c9fe1fef09836d8ce39047110327f3392be6f2333c40

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