Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d481ff5b27277c…

MALICIOUS

PDF

255.3 KB Created: 2021-07-05 10:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c05a54e3e257c612a653ca5687e6083b SHA-1: 71466022a8613f6761ada817e47e612d6d604681 SHA-256: e3d481ff5b27277c71dba94a6ba2292008ef7dd360ba59e4773732915b1b89b7
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress upload storage and SEO redirectors, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of external links and the nature of the heuristics point towards a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 7

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://ordinate-ltd.com/file_media/file_image/file/kowesuvugokinapapu.pdf In PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6e33e933c---roboruv.pdfIn PDF document text
    • http://evola.it/userfiles/files/mofimemewilizomunaseg.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160920802613a6---15893735016.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/niwojibozenatizege.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/45a5bee364642a985be7922e7ce52e80/labowiraxas.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e6845276f---kerejakared.pdfIn PDF document text
    • http://praguetransfer.com/files/file/wivezapisifa.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/kiwiwaxomo.pdfIn PDF document text
    • https://agatanorek.com/files/file/xejevepofufojumolapux.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/2f1478178d5437e09886fe155ab3ff2d/37203295402.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/1kbef9phb7fjg1srgc6knfbs2o/begokaraxixim.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/tpgdn50lvgvc3o53qhf3vnt1v6/pefarepugo.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3ace989a3---80118826672.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87ae0b8c7d---88053607186.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160867ff11d398---12668588427.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/61cff4a8f5656b6f4b00bb240da1daa3/fimosefuzeki.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/m44c22ruqkjshegedk0hq5hmj9/gawanufutor.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/40713475057.pdfIn PDF document text
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/zitirofosagixe.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5ab1dcdf6fbfa79c00ace28c19474986/wojugedexewoliwobafufara.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/fosifizijoxodogugeve.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/93d3c80eca2afcaa67966462d449ca8c/fufeviwuvifisadowawubab.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aabf1542eb6---bijogig.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/5hdh3ctib844697mo5j3v16qgu/fevitegegusefenutitet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+dance+with+a+guy+at+a+clubPDF 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_off00038cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38CB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0003a4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4C5 18436 bytes
SHA-256: 176b5b401ff8a8bde379fcc99a689c4820a78be3ca87fe38fe9e87e473e73d1f
font_02_sfnt_off0003d47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D47A 10812 bytes
SHA-256: e8a8669986978dc5cad811978d01c58617b3634f6e4f2d0ae16da1f6b75c8093

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