Malicious PDF — malware analysis report

Static analysis result for SHA-256 9814ad83f557573f…

MALICIOUS

PDF

106.9 KB Created: 2021-05-01 09:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a53eaf8240a05899dfbf239832a694d8 SHA-1: fa26683d64436ab9b4d13a1459e3b6c3d4e97d9c SHA-256: 9814ad83f557573fc4d2a8af38fe3692d744df316803aaff9f54da61645c0c34
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links pointing to compromised WordPress upload storage, indicating a link farm designed to host malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan distribution attempt. Although no scripts were explicitly extracted, the nature of the links and the heuristic firings suggest the PDF is intended to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1920

Heuristics 5

  • 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
  • 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://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16071a07355cd7---90796020080.pdf In PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606d683080755---39399535251.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16074d369cc945---kafotomopelapetopi.pdfIn PDF document text
    • https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/f0bc88212e936e7b6d996bc337f5ccba/woturubabigenorumajaw.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608068416a5e6---kokuwikokapibefig.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/4cf72d8773ba81aa16ef6d6995238000/bexagibelixumo.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/jikumeten.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/6fd19f32b7a5dded36b37f6d11b19750/bidawovulonidab.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076d58d87341---94684697549.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16087c496741e3---pixiko.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/851c1db8260dd527ca5cb77345263f12/62484174359.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/77a90460c4e1d28023d52bd015041d82/netudunitexamo.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805e6b52edf---dadadu.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9d40b6fcc---rikorumesudofetopori.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160812a5f9ad02---45857074131.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/b7e2959932a4a9b54136746ecfbba870/78264754287.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/2ad42bb3ae6ca3966d0ad9ddcadb2bea/jesamaxijesak.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c37d57577---53175603057.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=aruba+7200+controller+configuration+guidePDF link annotation
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CB1 6420 bytes
SHA-256: 8c3786f0443fe7a09f17f8f2bc2c31e2b8d9c3872116bdc353d64d7c77e5870f
font_01_sfnt_off00016c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C5F 4892 bytes
SHA-256: 498bcb29c830999e1a2185d782d231fc436c5aeefef46b9964c2da22eb84e08a
font_02_sfnt_off00017d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D8A 1768 bytes
SHA-256: 4d48c425ebef90c2d02d06bcf645bfe766804625a466b4613fba07e24684c3c9
font_03_sfnt_off00018631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18631 5492 bytes
SHA-256: 937bd5ac7eb6016e21c28dcc2daa104134b098933423f6d86f72a858e419a45a
font_04_sfnt_off000198fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198FB 2156 bytes
SHA-256: 883e97aa5960a610d251fc9e9bfab673558626355a0afd7dfc68c12b2b6de5a4

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