Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bce04e9a5a6d64…

MALICIOUS

PDF

87.6 KB Created: 2021-07-30 08:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5ff1219006cf41a23191886362448b5d SHA-1: 06c157cf21cad047060752fbfc9303bc1e764891 SHA-256: 30bce04e9a5a6d64791c4aa5a1b418df656036dab158e33473d7d738d8ca261e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF document was flagged by multiple heuristics, including ML classification and ClamAV, as malicious. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into revealing one-time codes or MFA approvals, consistent with credential harvesting. The presence of numerous external links, many pointing to compromised WordPress sites, suggests a link farm used to distribute the phishing lure or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/327bae7890fba6a848db4c4daed8a4ef/71321856423.pdf In PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/91c135146f51808dbbba99aac519664e/basekoxito.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/lewaberuluguwub.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/3fba5f3c7dc489b6a6fb7638f3ec3242/fokelimo.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/61c544f6883691e15fa8e99885805a46/nutuv.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/20fa6b3c388b8243c5eb1de3a648cd51/26458640743.pdfIn PDF document text
    • http://sixtyguildersresearch.com/admin/photos/file/44640498079.pdfIn PDF document text
    • http://dansungsala.com/uploads/files/pojulisu.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/33474017055.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bf524a5c31c---43847051696.pdfIn PDF document text
    • https://j-kowalewski.pl/uploads/userfiles/files/vulilip.pdfIn PDF document text
    • http://happypalettebnb.com/CKEdit/upload/files/46681365462.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/ghaes54ts1v6odp9gm53l4p5jm/ranuwowanego.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/dorerevipibul.pdfIn PDF document text
    • https://cottonweb.net/userfiles/file/64939830546.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/47d6cbd4a89e72893e7f3e80a11689d4/25893542958.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/nupozapiluxazabig.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/15950838069.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/fe39ed0bfc5829a43b7f0928bb6fa9b6/49450173948.pdfIn PDF document text
    • https://www.eos.org.eg/ckfinder/userfiles/files/46986479524.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087d08623f0d---denabotuv.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/mowuzanala.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/fugibijajutizupanoruwozu.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088f84e6486b---48816127664.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/b3o4uebpdjaccu9a2tj3jvk3ms/mufukexazubevufezasujubim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+fill+in+my+appraisal+formPDF 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_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 17168 bytes
SHA-256: 549d688189f358b0b40666d726a40fe7fe8bd7aec23e165bacfe0a2e2d3c8df1
font_01_sfnt_off00012092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12092 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000138a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138A9 10580 bytes
SHA-256: 60af8d16fdba68a7066c66337437b5ddc88fb7f451f7d8f82e04383f1bfdbeb5

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