Malicious PDF — malware analysis report

Static analysis result for SHA-256 059e8751c0c7fb4f…

MALICIOUS

PDF

76.1 KB Created: 2021-04-06 23:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 56a4a2175afdcd1734c69cde91e919a2 SHA-1: 22763513cd672b40841f7e1e7f34977b32ba849b SHA-256: 059e8751c0c7fb4f5d4bd5778fefbb762a083779ceb4954639a53459b457b5df
104 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristic firings indicating it is a phishing lure, specifically referencing a "carer payment form". The primary malicious URL identified is https://jumiwimov.ru/award?keyword=carer+payment+form+pdf. While no scripts were explicitly extracted, the PDF structure and ML classifier strongly suggest malicious intent, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jumiwimov.ru/award?keyword=carer+payment+form+pdf PDF link annotation
    • http://makeyourself.xyz/mbti_test_free_online_ting_vitg5yzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_6009faec400ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480155/normal_603fd8c7b8966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_602af86ece11b.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/bissell_proheat_turbo_manualxu5mh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_5fd8e788ceda7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414164/normal_5fff9bc721179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374979/normal_5fce4eaa41876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_601c6a51c0a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477139/normal_605150939c7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449974/normal_60454c7005f4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482617/normal_6059a218ae62f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486775/normal_605cff7b6f073.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423188/normal_5fcd40919e111.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/lumixi/pupufodokifa.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/97889607351.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/bevajanugiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/moxewexabe.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_off0000ed4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4C 4984 bytes
SHA-256: c551dcbf13e94a26b8779dc89e94c4085d04d17edd63159ba35afc605ce8b32c
font_01_sfnt_off0000fe37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE37 10976 bytes
SHA-256: ec916266b857e7a2610fc9e8f799915f366e94a40449c4a9eac96a6dee7ba5ac

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