Malicious PDF — malware analysis report

Static analysis result for SHA-256 7865696373e62f93…

MALICIOUS

PDF

82.3 KB Created: 2021-08-26 00:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c5dae8b56e996be07af29527ac0a78ca SHA-1: 6c287dd772f005874da012bfc7b816b6dd676536 SHA-256: 7865696373e62f93df1df4c76d7a1d29c7925dea425de1365c859eecf7ac7a42
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/8t48id3mk750rag722dkl0sv1t/37578192372.pdf In PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fbe3f9704dc---kutubamorabaro.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/spfhh31o0d6tcperf1dus6mgft/22331115932.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861bd97f74c---visukuxar.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/ripolukoramimabirulegexu.pdfIn PDF document text
    • https://inks.bg/userfiles/file/vedupuruwiwaza.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078be28bb54d---daxejovebuw.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/csp5v9c3tsjkpfsm0u37tfrs93/fomisilanevofufixotozo.pdfIn PDF document text
    • https://bulgariapools.com/contents//files/zomijegupuguzigajeloginu.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4e392e66f---tumisodabiwoxesopof.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/16098f97996788---rokagalumor.pdfIn PDF document text
    • https://tahubunting1.com/contents//files/xosasajizoseluver.pdfIn PDF document text
    • https://smartstone.ca/userfiles/files/76725698323.pdfIn PDF document text
    • https://gulceoyunlar.com/calisma2/files/uploads/85726521649.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/fofitovosejanesujogoba.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/79050840624.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caabbcc690---97536897882.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089f811e53ec---rezugob.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/ae351d90b9d40d1ba7676de138dffba6/zutarifomijifu.pdfIn PDF document text
    • https://foulardfotografando.it/file/40587128798.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/mazirulunilurasuluxes.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16080694bc2daf---pifemavimajazonimatabov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=fiduciary+management+meaningPDF 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_off0000debc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D3 10568 bytes
SHA-256: 384f25b5e2df8e50df4baa45c222e55212801b61f73cd2b278113df8f7bac79c
font_02_sfnt_off00010eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB1 17032 bytes
SHA-256: cc2744f145770f6859226f29ac32b6fc60ff14599c429b1db96b5c4603b2350d

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