Malicious PDF — malware analysis report

Static analysis result for SHA-256 2df66452a3587eda…

MALICIOUS

PDF

89.1 KB Created: 2021-07-17 21:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ddf1f704f9688b75b58ea09b841fcddf SHA-1: 1d6c4bf23254fd8598632b773c2eb5c6011c3b61 SHA-256: 2df66452a3587edac97ea7403e651c776d3f6692ad6a663d805acd8d8694aad1
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2582699dcf---dabipapaxamomakumovavoj.pdf In PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160753b555d901---34144818862.pdfIn PDF document text
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vomopumu.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6db5b9f0a---komavitu.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/24228515340.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944feb249ab---93484157876.pdfIn PDF document text
    • http://acgroupenterprise.com/userfiles/file/rajoxisukuxiziliza.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/9v4jbeuuu4b8027omiefp842s1/29637145375.pdfIn PDF document text
    • http://tmtechvn.com/webroot/img/files/luwoso.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/6ba6113501034d9375a28540dc444f92/47745674981.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160be41cdc7c66---setokibowogobugajitazuko.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949ffa413fc---xinajoxixonexulodoboba.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbd20f0043---1003616010.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/xapexobemotabifazewa.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160814f2f81947---lalerupadusivanegeduw.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1ba1d9173---jeledam.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/00e63ad158966b8b029fa8e1c3bfdd23/tologapujufujovujasa.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e2000057e5d---72430620327.pdfIn PDF document text
    • http://georgefamilyreunion.org/clients/86186/File/wanelejipe.pdfIn PDF document text
    • http://www.contectrade.hu/fckfiles/file/27527378376.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/420637d8eb8ceb039d38aa0934bc3b62/47080534484.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/67880649971.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a8180544a96---vurujunonar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=stretch+your+legsPDF 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_off0000fa51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 17348 bytes
SHA-256: 652504a6970a3bf0f081ab6d4158e887df31e5eca527b4cccf1da21aeb8c4dc4
font_01_sfnt_off00012765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12765 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F7C 10440 bytes
SHA-256: d90f127ce53c796d6edd2fb0956334cde66d35237ba781bafe45a3e35293e775

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