Malicious PDF — malware analysis report

Static analysis result for SHA-256 018701bd0ebf5ee5…

MALICIOUS

PDF

74.8 KB Created: 2021-01-12 14:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12ea6f9b31976e7aad5ad2cd2d60e5e5 SHA-1: 966c2cba871104fd0d94e83e29a47f5955921add SHA-256: 018701bd0ebf5ee597cdc7ec47adb084e2b0632d4cc790636d6fed00115139d1
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URL points to a suspicious domain, suggesting the document is a lure to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it may contain malicious JavaScript or exploit content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/aws?utm_term=science+worksheet+body+systems PDF link annotation
    • https://cdn.sqhk.co/gisusisabez/tQjhicl/xoreredexowubijab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5fe84d3d44c80.pdfIn PDF document text
    • https://site-1175933.mozfiles.com/files/1175933/among_us_custom_skins_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/hbEidbC/97523178728.pdfIn PDF document text
    • https://zedimidobigeno.weebly.com/uploads/1/3/4/7/134721933/duwemuv-jagakexogupij-gevav-rudomukoxibojan.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/AjjhiPT/disney_princess_dress_up_outfits_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449014/normal_5f9e5e76c69d8.pdfIn PDF document text
    • https://site-1173990.mozfiles.com/files/1173990/23773101197.pdfIn PDF document text
    • https://site-1189081.mozfiles.com/files/1189081/vajigim.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/paropabaru/44296493583.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/baskerville_old_face_font_bold_free.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_off0000e6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BD 5440 bytes
SHA-256: cd48079470cca1e4d5d04d5e23dd5e8511177b13b5f8e4488812617664496e16
font_01_sfnt_off0000f92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92D 11360 bytes
SHA-256: 280b69286b73b79aa600f2e81caa60079fb3de9a9aa771fa95955455d822d8f8