Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b1b1e187aa1aec…

MALICIOUS

PDF

86.2 KB Created: 2021-04-06 11:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d4d03a16afc97ce597a64dfdadb340bd SHA-1: 70cbc51478cb7b1417ec989b8a2c862d3af02c8c SHA-256: 47b1b1e187aa1aec4e1ec31d6ae099360dd183ebdcedb47046848915f7e2861e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs, 'https://maypoin.ru/wix?keyword=kyle+harrison+baseball', is flagged as suspicious. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these linked resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=kyle+harrison+baseball PDF link annotation
    • https://jevebuna.weebly.com/uploads/1/3/4/5/134594548/9576679.pdfIn PDF document text
    • https://devanuwi.weebly.com/uploads/1/3/0/9/130969177/9351dcc193.pdfIn PDF document text
    • https://jupuwova.weebly.com/uploads/1/3/1/4/131409597/jirenofarejafeken.pdfIn PDF document text
    • https://gazubulurogul.weebly.com/uploads/1/3/4/4/134493330/5597963.pdfIn PDF document text
    • https://dalenorilesa.weebly.com/uploads/1/3/4/8/134858788/zobago.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rufegojokod.epizy.com/2765716667.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/xilatifujoge.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/mopaj.pdfIn PDF document text
    • http://gadiwovujema.epizy.com/belt_and_road_comic_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/vojomabuxipexubav.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/estilo_de_aprendizaje_activo.pdfIn PDF document text
    • http://putajamesar.rf.gd/oracle_forms_weblogic.pdfIn PDF document text
    • http://popelakuvikiwin.rf.gd/68881131866.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/data_studio_templates_2019.pdfIn PDF document text
    • http://wunixaxujosobif.rf.gd/94464573354.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/12405922928.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/free_modern_cv_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/weight_calculator_steel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/mokomamogixajiligi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D9 4692 bytes
SHA-256: cd883c4c0b8e8ef996c77f116ed6e5f016616ec108063904ee6ec5fb1b2aa3da
font_01_sfnt_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 11184 bytes
SHA-256: 215487c8f468ddcc8e8a282fa2b80fc5d1943b42eb496e2e00b448c315327419
font_02_sfnt_off00012822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12822 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off00013d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D52 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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