Malicious PDF — malware analysis report

Static analysis result for SHA-256 9496740fbc9956e3…

MALICIOUS

PDF

111.9 KB Created: 2021-07-01 11:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d21072dbcff9707d538dc2c0a3f94210 SHA-1: 2a6ba2c1bb51bc37a537f5d0ea1b11e6f01c03f5 SHA-256: 9496740fbc9956e3a37e8dd58dcee5421561209eda6b1264e9e3433bf87b08ff
252 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and multiple links, many of which point to compromised WordPress upload directories or disposable hosting. The heuristics indicate a lure for payment redirection and brand-impersonation credential phishing, specifically mentioning UPS. The embedded JavaScript likely facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 10

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=mohave+county+offices.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://sincaremedicaltour.com/js/upload/suviniwewabibonun.pdf In PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076df91d4a54---77526403924.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/bodaguk.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/smb4l0dgd9conp295o2hjcdaf2/raxonijekonosewubepu.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609b353ea29cc---pawemu.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c435bf621b7---ladafabagezubunekabupa.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/8aa61cf52042f4059c09616c6c6252ea/73947441432.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/bimenilemilawoxolazefogew.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/gajegexovisegowidado.pdfIn PDF document text
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/tilezemaw.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/917a7e6a4070789acc2de17039985531/60674748252.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/fd1ef652fe6e8add978d3c839d00269a/ruzefonononetekoteje.pdfIn PDF document text
    • http://ekachaiguitarist.com/ckfinder/userfiles/files/bekawugivipirupon.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/hds4fqclc5s14gidnggpkcaa6u/57191320301.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3703d219b8---wuforunozifaxoveres.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/23906772367.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/ee9c781a3305afa1adc024dc441748de/22868015832.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/41148606011.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/29819803995.pdfIn PDF document text
    • http://xedaptheduc.net/app/webroot/uploads/files/sebixewosidorerari.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4f39c4ca1---73660679258.pdfIn PDF document text
    • https://digireg.it/upload/dexuwe.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ed430f564---jutinaf.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/5ts7ur63sd1rlev7hojhoebq72/jemotifasagugopivuvuxaza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=mohave+county+officesPDF 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_off000154b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154B4 17288 bytes
SHA-256: 862d1c94fc88198cb3f28446a619018005af74ad8dfb6d9c9bfb98476e84ce3b
font_01_sfnt_off0001821b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1821B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A32 10560 bytes
SHA-256: 362cc3cea1f0eabbb2c0f66c14577330e67bc9d8b765f634747ae260dfff5930

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