Malicious PDF — malware analysis report

Static analysis result for SHA-256 7006f33a9e789b2b…

MALICIOUS

PDF

93.6 KB Created: 2021-07-27 15:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 2eb1e28002a76cd4a6de09f0a6748038 SHA-1: 4ed00d2e40f9f454d90e1219623cb066360ee761 SHA-256: 7006f33a9e789b2bfe73d3fdf37dbe352e5db64683ec3d9bcbbe2ad2d7938968
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate it's a link farm pointing to compromised CMS uploads and disposable hosting, with a specific alert for brand impersonation (Walmart) for credential phishing. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a lure to a credential harvesting page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/BvfzZFkJO3s/uplcv?utm_term=how+to+hack+coc+gems+without+human+verification.
  • 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.
  • 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://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/77nmnupoc40gporevogbsegrh2/joboxonudibaxevo.pdf In PDF document text
    • https://evergreencans.com/userfiles/file/20644231884.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/lt7nppmda6f01jeigge5ld7du5/lotudoj.pdfIn PDF document text
    • http://reklamavysocina.cz/UserFiles/File/63494847024.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/guseroxu.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/78deb8d0e4ba2a4f368a13ae5a51c595/62259972285.pdfIn PDF document text
    • http://ukuleleceilidh.ca/clients/860383/File/3792526644.pdfIn PDF document text
    • http://simpelms.nl/userfiles//files/66666688092.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609479197f361---togejubow.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/kemijaximozirupux.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16088944640702---foretimibazoxekulapesax.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608634199632e---turiwomixuragatizur.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/5b3vcedeqvuqjta4rqofcaipa5/fowexekafowapelixonu.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/217742368211f3cd737474d494b96979/19489675494.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607212ba29280---dotopisinuka.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16082b82920dcd---rovikina.pdfIn PDF document text
    • https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/19442484137.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/vamovafilijo.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/nowatazulodidiku.pdfIn PDF document text
    • https://call-life.com/ckfinder/userfiles/files/47165045926.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/kuwasuruwizukil.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea1ba093bf---2999290195.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec52cae460---zatefotesomape.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+hack+coc+gems+without+human+verificationPDF 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_off0001070a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1C 17876 bytes
SHA-256: 8f6b74cc23a9b467b604290260e08919315e8446b1cf7667632e602d43178af7
font_02_sfnt_off00014df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF6 11072 bytes
SHA-256: c1c9b7f00835478c816e9bfa7cf5dac1ab0458381b981f3db8e9b372c7fec208

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