Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc317ea4a7ab45d7…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 13:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e1b1d56991ea6fdb1866b0ac145e319b SHA-1: 9d20d9e6b678f3ed7b8e7cfa94e529ef612609a9 SHA-256: bc317ea4a7ab45d7da3614f96f8401f3c57373e15324e8f2efb0232fe72c8470
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://vilenefex.ru/strik?utm_term=mw%252Fmm%255E2+to+w%252Fm%255E2 PDF link annotation
    • https://cdn.sqhk.co/mixubiki/hbkebhh/free_online_flowchart_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_602467624aec6.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/bogeguva/76522224146.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/fojukunifibijipefikexut.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/48626250847.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/14309817366.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/valkyrie_profile_lenneth_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/how_to_do_pencil_shading_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/adverbial_phrases_worksheet_year_3.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/aggiornamento_android_9_huawei_p20_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/45174128528.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/information_asymmetry_theory_in_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/honeywell_rth9585wf_installation_instructions.pdfIn PDF document text
    • http://gixuwopafapiro.rf.gd/53158434691.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/beaumont_capital_management_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/40556063665.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_off0000de9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9C 4628 bytes
SHA-256: ed2e5869d6910f2d5462a53881c3fec3a2825830582d0e19dde811d2e4cfc8bc
font_01_sfnt_off0000ee7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 12684 bytes
SHA-256: 8920fafa291843049bb2135cc6eb5bc8b3ba7c29859e0f4ff520f678a9054f19

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