Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce38397111f4e158…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 02:06:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 82df8a8e42f249f55df76f44775eebb3 SHA-1: dc16026ab02634a90db9a2796e17f9087bc21b61 SHA-256: ce38397111f4e158a44680d5bcfd2782d595d49dab35b3ba99284ff3fb104280
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL `https://jacksth.ru/wix?keyword=download+star+wars+the+force+awakens+mp4` suggests a lure to download content, which is a common tactic for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs point towards a malicious document, likely delivered as a spearphishing attachment.

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://jacksth.ru/wix?keyword=download+star+wars+the+force+awakens+mp4 PDF link annotation
    • https://cdn.sqhk.co/pekotegafod/jfsigic/double_infinity_symbol_tattoo_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/6Xajdnn/9287394497.pdfIn PDF document text
    • http://psylath.com/zagerisal4ipn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_60281138401b4.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/heF8ErN/animals_in_winter_kindergarten_lesson_plans.pdfIn PDF document text
    • http://auto-agents.space/reflector_3_crackhloj0.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/zaU2yhg/sogebank_haiti_taux_de_change.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcdf3c626960.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/xurixado/save_bitmap_image_to_folder_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/reporter__plus_tard_synonyme.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/xowasesamaru.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/48182477759.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/neravaxofisujixoj.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/guided_tours_around_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/91895851679.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/sum_column_in_crystal_report.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/45596647173.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_off0000d6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D3 5636 bytes
SHA-256: 36027e66e286700c1bc29eb568ad2410457046d27d4d821771eb2e4e2cdd24a6
font_01_sfnt_off0000e9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F9 10928 bytes
SHA-256: e827c186742e7c03b1cf0d68cf3ab3d4640ab60f27522b3ee53cecc230abd32e

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