Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e4c2e6bdaf963d…

MALICIOUS

PDF

73.9 KB Created: 2021-05-23 06:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 22333f1d048cbc5a902a194fe84f1f9d SHA-1: 23c65e2d2906cc97325fb30a437a475f985f158c SHA-256: 00e4c2e6bdaf963d9097c7818fe2a0956cfef790c96ba4e468b1112827e92c4e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/strik?utm_term=the+chronicles+of+narnia+the+silver+chair+videos'. This URL is likely used to lure victims to a phishing site or download further malicious content. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further indicating malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=the+chronicles+of+narnia+the+silver+chair+videos In PDF document text
    • https://cdn-cms.f-static.net/uploads/4492253/normal_60120c0026950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401519/normal_6026f977c92cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_60504776151ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388827/normal_6017b3387092e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405950/normal_601fd197cf2b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415546/normal_602bf533091f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466146/normal_6001f40eb2070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391925/normal_600cefffb0eb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449629/normal_604d48b0477a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_5fd975258a193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_606a70ba07e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491148/normal_6037c33ce6d25.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/fobupojowojon/how_to_check_google_maps_date.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/34239204523.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/2002_4.3_mercruiser_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/16660253733.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/canvas_student_app_for_windows.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_off0000e582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE582 5116 bytes
SHA-256: 842426308ac5edd8b7209b8b2c697f10bd9de1d7cbfbecb7450d301a576c8506
font_01_sfnt_off0000f6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E8 10388 bytes
SHA-256: f1abe1733f890d1f1b3ae4bdbd0be6dd9efeb122377eeed572a47653a47dd292

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