Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc8d594c37aaf55…

MALICIOUS

PDF

79.5 KB Created: 2021-02-26 06:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 25bb16dd3b67acceb40875a00e825bf6 SHA-1: 301c7087162bc2213c88f3ddf0dea4dfa2d0b592 SHA-256: 7bc8d594c37aaf55919853d6aceaa6576d2677b6b07edc493aa6174da4fbfda9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as a search result for a unit conversion. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or credential harvesting attempt. No scripts were extracted, but the presence of an external URI and the overall detection suggest a social engineering lure.

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=cuantos+metros+son+un+centimetro+cubico PDF link annotation
    • https://cdn.sqhk.co/nanovinojon/didjfgg/98827883920.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/E0SkhbU/30455351337.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/igxjejc/nibajakiguwefonowus.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/X4ihhhO/viwakafo.pdfIn PDF document text
    • http://forsage.pw/ninja_foodi_grill_vegetables_recipes8g6fj.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/559712419383f4sl.pdfIn PDF document text
    • https://cdn.sqhk.co/perokokamosa/gghfdiB/seloxo.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/C1F2jbP/kixesukodotekuranedemofen.pdfIn PDF document text
    • https://cdn.sqhk.co/tenalewi/icgko9P/murder_hornet_texas_a_massachusetts.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/hbigZia/little_foxes_movie_review.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/fejatepudopito/rasowivaxemusati.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/cabin_crew_resume_format_for_freshers.pdfIn PDF document text
    • http://vasozebuxez.rf.gd/besisinizolurap.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/ioi_downpour_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/how_to_explain_educational_background_in_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/fabola_andrade_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/75364851170.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/davosagusidanotupuru.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/87269974519.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/pudovavirowobafez.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C5 4956 bytes
SHA-256: e64aa56d72f7da56767fc3c39362c1bcc5407dc9185c82e70e53e8718c4af96f
font_01_sfnt_off0000f385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF385 12188 bytes
SHA-256: 8f0fcd1751c8c0a3ad18e90f5a2a33d65281618ebe2cdfd79afa4d3de4bb5b23
font_02_sfnt_off00011b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B70 16100 bytes
SHA-256: e8be64a599b4775abf69106d1ea2a605297721d8ccc8071fb3d67c702b09cfa6

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