Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e49207eedf8030…

MALICIOUS

PDF

89.5 KB Created: 2021-07-12 22:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 0df75524faa6ce6a39324a37fb6ba657 SHA-1: ffe5bc7f6ba3ffa384a0f5fd68adcefbb08a549d SHA-256: e2e49207eedf80307c06cd085508c454c3887312cad35843fe52bb1f2af8d286
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. The presence of a 'Payment redirection / bank-detail change lure' heuristic strongly indicates a phishing or financial fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c1713804f10---zitemerajixina.pdf In PDF document text
    • http://angelescare.com/userfiles/file/20439153226.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/38768732917.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/jatavoj.pdfIn PDF document text
    • https://sambelteri.com/contents//files/sokamugukulovibiwisora.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086c404e8df7---zovore.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/74284681668.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/77364172611.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160832090674c8---logimixevaziforufaluro.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1bced34c4---gogogozofexudasexonu.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd89ec03c9---62324234570.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c2c87f1d6---38486373875.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607c568105843---vuvurivonuxijozudivanijo.pdfIn PDF document text
    • http://flywings.sk/UserFiles/file/xepugosumirisazufugidefu.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/97812893050.pdfIn PDF document text
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/258a2fcb43f8e6efa4998f336e82c98d/98480532267.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/lelozotojopokizomadoxa.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/mozaledaj.pdfIn PDF document text
    • http://ksuskalology.com/images/file/86602911459.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/f4a64c20d68ba0daedd9eb5f5d662a36/kavolisolodunezozuwubozu.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/r4835octd5aqe12v115fok28r0/tupevowi.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607d98932f033---molowoxija.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+can+you+see+deleted+messages+on+instagramPDF 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_off0000fa13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA13 17260 bytes
SHA-256: 19ae9abeb07371cf3966489dcd86aa1740a88f2a90da21b97a21ebc14c72d136
font_01_sfnt_off00012710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12710 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F27 11004 bytes
SHA-256: afcece756903abbb5aa9ce200f445310e88e9cab286a68730fc1e1e2cd34ff9f

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