Malicious PDF — malware analysis report

Static analysis result for SHA-256 8345c61598013bce…

MALICIOUS

PDF

68.4 KB Created: 2021-02-21 02:24:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: ed5f785f480d4079f918b6eabe527d1a SHA-1: 75f6e3743130cfb6af1ee6733e2e3b2c2a783bae SHA-256: 8345c61598013bce18e895be5a16dabcfdaf8a94dc78d0981ee67a12dbf47adf
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=washington+post+crossword+puzzles+penny+dell PDF link annotation
    • http://klosheff.xyz/management_of_change_procedure_template5gawr.pdfIn PDF document text
    • https://cdn.sqhk.co/zitedefew/0YgjjeR/55921201989.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/hfzDhcP/samsung_notes_app_font_size.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fd65076245e0.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/ww8wGjj/dasewavapexijuzumeniti.pdfIn PDF document text
    • http://nunezuse.iblogger.org/vevelafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_60307d4016a8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_5fd1ce1be1f16.pdfIn PDF document text
    • https://cdn.sqhk.co/buganisazobu/6agjijj/64542914774.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447278/normal_601ac48cbe7ac.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/fOibidc/859887952.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/kolman_busby_ross_discrete_mathematical_structures_download55ipd.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/fobupojowojon/file_reader_javascript.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/60483718156.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/walter_riso_wikipedia_francais.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/aur_pyaar_ho_gaya_song_bestwap.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/bewivolujo.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/overtime_work_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/crock_pot_programmable_slow_cooker_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/audiology_australia_membership_form.pdfIn PDF document text
    • http://labifaf.epizy.com/45341166993.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/simple_flower_coloring_sheets.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_off0000ce2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2F 5592 bytes
SHA-256: c77ad810dd8eded0153ab03a960c77f8714c5831d13210d5b46907204bb3b60d
font_01_sfnt_off0000e15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15D 10028 bytes
SHA-256: ba6c8c21e0f355725189a8746446ac48fd52316377a39023c2f7aa86fa09de46

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