Malicious PDF — malware analysis report

Static analysis result for SHA-256 fceeae2e645ed555…

MALICIOUS

PDF

78.9 KB Created: 2021-03-02 15:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 4c5b4c8fdd5e8aff9df319cda51171fb SHA-1: 850f2cc8ea0797d26953652a205883810944b246 SHA-256: fceeae2e645ed5551ce8d85ea4d980897b594f02f67b6b23eb5429e6cd753259
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing campaign. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this, indicating the document's primary purpose is to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/aws?utm_term=merchant+of+venice+sparknotes+act+1+scene+3 PDF link annotation
    • http://investmag.org/rufometokbsov.pdfIn PDF document text
    • http://usblighter24.site/zexilozopizuvosues2qg.pdfIn PDF document text
    • http://gigezesuzobe.getenjoyment.net/roland_fantom_x6_used.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/ada_berapa_surah_di_dalam_juz_ke_30.pdfIn PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/5585593.pdfIn PDF document text
    • https://ladifibefumuxuw.weebly.com/uploads/1/3/4/3/134353250/4953822.pdfIn PDF document text
    • https://zisetilu.weebly.com/uploads/1/3/1/3/131382786/waliwuforejiwe.pdfIn PDF document text
    • https://satisetuxa.weebly.com/uploads/1/3/0/8/130813646/venanek_malusovibux.pdfIn PDF document text
    • http://nonowun.mywebcommunity.org/2010_chevy_camaro_rs_tire_size.pdfIn PDF document text
    • http://216tilford.com/1888955170tloej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/plumbing_and_pipe_fitting_tools.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/30300995611.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/literary_criticism_uil_2019.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/food_chain_lesson_plan_year_4.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/29469538631.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/12869953902.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/yardi_voyager_work_order_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/marketing_agency_proposal_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/samsung_printer_xpress_m2835dw_user_guide.pdfIn PDF document text
    • http://fabedidatifi.onlinewebshop.net/98674430428.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/24851261313.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FC 5416 bytes
SHA-256: 31018dbb8f0906965eaf3749ae71d38811659ff320f57167b9adfe7a27511b75
font_01_sfnt_off00010b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B85 10152 bytes
SHA-256: 1abd8e8c923e52e6c7e1a4f2d7fe975ff35b659410ed8af9461f99393061d335

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