Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ce1a12025432ec…

MALICIOUS

PDF

95.8 KB Created: 2021-07-06 22:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 306cdf097c7e3aecb2a48b3963358bfa SHA-1: 99da36415df6a8e7480fdcb8a77d7d04489cc085 SHA-256: 33ce1a12025432ecdb35c192506fd63fce8b74ed98268dce4ef554f297d0bcf7
196 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, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document likely attempts to trick users into changing payment details, a common tactic in business email compromise schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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
  • 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.
  • 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://wastran.ru/uplcv?utm_term=unless+a+seed+falls+to+the+ground+and+dies+nkjv PDF link annotation
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/128300dc3c4d145d918a927c5973c9ee/7090045591.pdfIn PDF document text
    • http://ruegen-ferienhaus-schneider.de/userfiles/file/jekasuxananovu.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/93237925847.pdfIn PDF document text
    • http://cc-loges.com/uploads/file/83259876318.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160772ce285950---38979339487.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e495460d3c---36210994756.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/0a7607aca07d48255b010c912fd3070c/68345687143.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800479129f3---48814169044.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/4f0644da9cc5832cf694f901c880766d/33497956285.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/maxumijowoxufa.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/xowukokerezokepas.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/0bb1c99e9fc79a126c13ab6d65158dd5/xawetogipurop.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/jewabasakodoke.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/12819515539.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/4751519470.pdfIn PDF document text
    • http://rubivina.com/Images_upload/files/98315313193.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607096b4e1312---wisun.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/solirol.pdfIn PDF document text
    • https://paron-rebondir.com/uploads/files/rukoravijupalikawura.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/23483611681.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/jetoverozebaxova.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fdb4c1377---42437924598.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/bezuwaguludexi.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/nezofivoniwivesu.pdfIn PDF document text
    • http://soflocops.net/clients/81266/File/kajopejawukipavos.pdfIn PDF document text
    • 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_off00010a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A69 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12280 11028 bytes
SHA-256: 39b3e0f4745f6358eb9e11475049a553b3eb18efbaad53bebf10efe2016fa2b2
font_02_sfnt_off00013bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BDB 20108 bytes
SHA-256: d7f31d92833c6d3cd7491534b3ab4afb431f84fbbfab651c72b90898b7816a9a

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