Malicious PDF — malware analysis report

Static analysis result for SHA-256 0573f3174dbdc3d7…

MALICIOUS

PDF

74.4 KB Created: 2021-05-03 06:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 826c0a8e5a44549fae10fda6ef72c775 SHA-1: 70fde1c2658dc9b610fa9732f574a67889319964 SHA-256: 0573f3174dbdc3d77c6905dc66c4987fb3434c1fd294a601af8e1ef84d2697de
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. 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 redirect users to a malicious site, likely as part of a phishing campaign.

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://botokaw.ru/strik?utm_term=list+of+connectors+for+academic+writing+sites PDF link annotation
    • https://cdn.sqhk.co/zegofurop/ZSpxVLH/best_rnb_music_2018.pdfIn PDF document text
    • http://ragadugizidej.22web.org/88949804927.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/fsujgmO/zevukupako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468553/normal_6041aa47a5bb0.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/R6gf3Sl/budegulidepugevu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_6012dc0504c2f.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/vgjqggQ/find_my_friends_mac_high_sierra.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/bezorito/27763506456.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/kofi_kinaata_adam_and_eve_audio.pdfIn PDF document text
    • http://sulosuduvemog.epizy.com/pavobenogebufogomigazi.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/twin_bed_fitted_sheet_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/higher_engineering_mathematics_by_bv_ramana.pdfIn PDF document text
    • http://tapomizo.rf.gd/julius_caesar_act_2_scene_1_summary_and_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/bootstrap_template_free_for_asp_net.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/nanolimofazalopisu.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_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 5340 bytes
SHA-256: be4c431bec734e09655208bd88bd0d7098b4aa5307514f189d216704869dcafe
font_01_sfnt_off0000f602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF602 10612 bytes
SHA-256: a945ac10d0e38f54fd99bf63c2ba55cb52bf1068f5f23b8ce64225bb9eadebf2

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