Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ac3e89f6fcde55…

MALICIOUS

PDF

70.5 KB Created: 2021-03-28 14:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e28f0308a666e2e6f27c0cbde2fc395c SHA-1: 4aa828483400f760eaa1d9cf95c40d7c48d726d2 SHA-256: 61ac3e89f6fcde55ecc93d18e4808eb9ccb088c862630d120da0ead4f4ebbefc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with the primary one being 'https://botokaw.ru/wix?keyword=disemboweled+husk+location'. This URL, along with others, suggests a phishing or credential harvesting attempt by masquerading as a search result or informational page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/wix?keyword=disemboweled+husk+location PDF link annotation
    • http://finoginujowiwi.mypressonline.com/quadratic_functions_test.pdfIn PDF document text
    • http://xifadezuzurap.medianewsonline.com/40937619621.pdfIn PDF document text
    • http://gazizelasama.getenjoyment.net/extraccion_acido_base.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/how_do_you_prepare_for_a_competency_based_interview.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/guba_and_lincoln_competing_paradigms_in_qualitative_research.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/zufojadibi/zufexupawozizufekozapof.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/49892413010.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/81450049571.pdfIn PDF document text
    • http://digufelusa.rf.gd/lexufoxowudagamuxig.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/88740673601.pdfIn PDF document text
    • http://wesovipimamino.epizy.com/acrylic_mirror_sheet_ireland.pdfIn PDF document text
    • http://wewuvizab.epizy.com/3213191756.pdfIn PDF document text
    • http://kiromimejobodo.epizy.com/52173996546.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/66087880740.pdfIn PDF document text
    • http://mekufajotifix.rf.gd/21379639306.pdfIn PDF document text
    • http://vubixegigag.rf.gd/forolopuvapor.pdfIn PDF document text
    • http://puriruf.epizy.com/access_database_training.pdfIn PDF document text
    • http://wofavum.myartsonline.com/arapa_harflerin_bata_ortada_sonda_yazllar_alma_kad.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/domain_and_range_worksheet_2.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_off0000d5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 5380 bytes
SHA-256: d5c203c417249d80b1912b4f48d05b18330d14c26eb86dd7edc31ca1211cb26c
font_01_sfnt_off0000e7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F9 10852 bytes
SHA-256: 60dd602728920639372d86c804bdf88e7a1290795e566ed36500d9e681a67d95

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