Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5918be2df81635…

MALICIOUS

PDF

80.8 KB Created: 2021-02-13 12:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 26ff3ff607397e4ca68a0ac36cc0adaf SHA-1: b59d722e701122e33573fd58b3f55e0d53fbc435 SHA-256: 5f5918be2df8163546d84dc20525b4e629e580f0f5a5912c2e69bb36c64b1bdf
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 suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to malicious content.

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://baarspo.ru/wix?keyword=autosomal+recessive+traits+list PDF link annotation
    • https://cdn.sqhk.co/vagekoxes/wxEegjZ/93546667780.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/1iggiLe/nixefokitujolekobigix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452206/normal_601a813acc34d.pdfIn PDF document text
    • https://cdn.sqhk.co/sadudolamom/ne37haR/vodupadis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486041/normal_6005d3c3a75ad.pdfIn PDF document text
    • http://ig-copyrightnotice.com/34681816504ycblz.pdfIn PDF document text
    • https://cdn.sqhk.co/kowalaxu/NhagfFh/dulojipetodegexexoviro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454682/normal_5fcf2e2a5367f.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/ia3hajc/kingsland_punches_and_dies_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/mfidha1/crash_landing_3d_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/l5Bhaie/las_vegas_athletic_club_cancel_membership.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_5fed7a8335011.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/fofeguj/sonatinojizibefuwot.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/67264050476.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/android_accessibility_suite_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/acp_guidelines_for_diabetes_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/garakewewiwideluwuw.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/xunakefirutedebemiruposad.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_off000101c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 4992 bytes
SHA-256: 5232725b57a0dd66ae56721c3753af2613a26681e2f1cf2a276c939ecfc8269e
font_01_sfnt_off000112a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A5 10264 bytes
SHA-256: bc0997ce992400325c0dad5e4139c39bb8474470a932de125fbe473661e0f1e9

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