Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b6d0ecdf603fcd…

MALICIOUS

PDF

75.5 KB Created: 2021-02-21 15:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f52066fac219d35691ba03b1df5cd844 SHA-1: 9bfe860d7239d04ff8f464f5a838a3046526b08f SHA-256: 88b6d0ecdf603fcd3b5f7b22d78d4699d34853a6b649d47e793aa389ec01efba
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/123?utm_term=sample+recommendation+letter+for+phd+scholarship+pdf PDF link annotation
    • http://mamajan.space/scales_and_arpeggios_pianoju83r.pdfIn PDF document text
    • http://siwelulatur.22web.org/29460727700.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/RIgdhep/bollywood_flute_ringtone_2020_download.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/ihhi1jf/raxofatodofakor.pdfIn PDF document text
    • http://abzac.me/51230296595zx8tj.pdfIn PDF document text
    • http://itawegan.fun/bofuluketafukujimexuwes7fqre.pdfIn PDF document text
    • https://cdn.sqhk.co/niririga/ihgdFha/rezexiwilo.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/kiremefegonar/1956707646.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/tamilrockers_2019_tamil_movies_free_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/mifefezanuradelu.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/california_state_university_fresno_information_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/alternative_android_store_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/tadokitexuwep.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/work_cited_page_mla_format_online_article.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/nz_tenancy_bond_refund_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/jeepers_creepers_part_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/kikejusakusisiso.pdfIn PDF document text
    • http://nodimetonakijeb.epizy.com/tukakagavusuginebenekojaj.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_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 5500 bytes
SHA-256: 94d0243bb33202f4c0c7156b4fc112c1716048d401748eb33726be6f575be28e
font_01_sfnt_off0000fdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB4 10248 bytes
SHA-256: 7ef90a87b40909d15b71f0d8d327acb9877fa67fc10aeed50a25fd0e4489c512

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