Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14df10195b6452d…

MALICIOUS

PDF

125.5 KB Created: 2021-07-23 01:13:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c7d4e07c8b4923674379e7d48e3090e3 SHA-1: 3278ba192d37613c09aa090726bfe97ccbeb4065 SHA-256: e14df10195b6452debc8c1dee56df27217b45eee9e08d442e2a59cb48817c424
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://alutat.com/data/file/47432368387.pdf In PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f36c5a7a4---junukojojigixadu.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160792a5b86084---2500597546.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/tazamuvafix.pdfIn PDF document text
    • http://fiorenzuolatrack.it/userfiles/files/datusuvafatilepese.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/tofudewifotakudojaxemawub.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/09b094925d1c085e0d21cef3cab5ed6c/bazoluxoniparukefila.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160c79006dd76d---59820917201.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/fj3gol1dbar0jrk8i0o54163qb/79509508067.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a6f8903a3---waroxowitow.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/foxasutabopifuwilezukino.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/as00jq3a0cmf96rjhlfbmtjsu0/rovugavole.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/5e6ede44415c44239a4e3877983a53d1/14707988564.pdfIn PDF document text
    • http://mytaylormadefamilyusa.com/clients/864113/File/rejivivepoxaxiwegurat.pdfIn PDF document text
    • https://beautyreviveshop.com/newerac2c/userfiles/file/43232913937.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16085b2d014d3d---xobasenip.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/90dba087a077ee00834dca72461f7056/vapinotolulezal.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/50122d86f1a738c9efb1c23f01e6a01f/goxexixuxakoremisigewe.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd8e160419---tuwosel.pdfIn PDF document text
    • http://wskinbody.com/data/boardData/files/42333541088.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/0lfglsfp2bppj24gdqtg21arrk/20661521604.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/2dqamrsu3tjrcp1q2m033ic282/81041245430.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=covent+garden+general+storePDF 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_off000189ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189AD 10428 bytes
SHA-256: a0bfc531936695161e969c7cec9597cd2760b6ca6c451a7a00bf7194c6e44b6f
font_01_sfnt_off0001a155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A155 18076 bytes
SHA-256: 8f88e5e9f1a0f0f418d27d7528509939d569240e88d21869b6443bd020a9ec54
font_02_sfnt_off0001d07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D07E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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