Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee72736a3c07026…

MALICIOUS

PDF

84.8 KB Created: 2021-09-01 01:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b9101f6b0705c4e5f0984844c7a6c950 SHA-1: 1549d14c0b7cf28f013d0c79c42a619d445c6014 SHA-256: eee72736a3c07026287ffebb84bad168c51012286dc816c9bace199f310cd6e8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF identified as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. It contains numerous embedded URLs, many of which point to compromised WordPress uploads or disposable hosting, suggesting a phishing or redirection scheme. The presence of these links indicates an attempt to lure users to external sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://gioiacompany.net/images/upload/file/wufabojixonudo.pdf In PDF document text
    • http://goref.ru/files/file/25058171639.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/8qk7ai3is6kebo7v5de3luve20/basabuxoginekanodi.pdfIn PDF document text
    • http://personal.sut.ac.th/chantira/port/ckfinder/userfiles/files/pemado.pdfIn PDF document text
    • http://area100impianti.it/userfiles/files/toburomalofowonotefimo.pdfIn PDF document text
    • https://tenutaedone.com/filesUploads/file/vaxevosudelanisepobe.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160f87b6a166d8---dazutepazuderemajetof.pdfIn PDF document text
    • http://hintzfamilyreunion.com/clients/1/12/12a2788c5de59b93c87e4eff35998d4f/File/56552710557.pdfIn PDF document text
    • https://bywuf.org/upload/editor/files/pafulijomilusoj.pdfIn PDF document text
    • http://c-amc.com/upload/files/jutejoxixif.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a1774e9e564---71777344579.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be31873eb57---zenaditajolixutaw.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/resalofituv.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af2acc52576---kiserebabisilozegan.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/tolalanireresulizixowodiz.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/n475766t7ggtc51vqd9mikrkm1/31290635856.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/vofebt3jstgjg87ll42t1t50m7/fofebugenejogajipofufipe.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d623f26c4---zusamuxivibog.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160758c9acfe45---33669908512.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609479bac85f8---lojejaz.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/13nukpvhbcsl3rpsaebppfehv4/pugetazowevimerusabojizo.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c49787e2a---pezijewojezekukejudilemek.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/8320849502.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/54973185158.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e8d697139---dajuzibekosumudesux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=likert+scale+rating+examplesPDF 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_off0000e5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fde6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE6 17968 bytes
SHA-256: 971251ebd52fae633241294accb37bb9127246e1d603f27514226cbf17fac09d
font_02_sfnt_off00012c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C3E 10748 bytes
SHA-256: 0b00ce07b473b93821ca9d9f9e33543f21d68f54376a92a9773ec96b91ade5f6

Open this report in the interactive analyzer, or submit your own file for analysis.