Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0b0c47bed6e4db…

MALICIOUS

PDF

85.3 KB Created: 2021-03-03 17:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 561652359a70a02c0c523669ca44a9e1 SHA-1: 908d11a11d5132a961d9da23d0cfa89c235b050d SHA-256: 9d0b0c47bed6e4dbb89c190de2db31bb07def5416c3ff6b2570dbfc4dbdfaa99
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 'crophysi.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests the document is a phishing lure designed to redirect users to a compromised site, likely for credential harvesting or further malware delivery.

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
  • 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=texas+drivers+license+cdl In PDF document text
    • https://cdn.sqhk.co/vixukose/DgeRjhJ/walkthrough_game_resident_evil_4.pdfIn PDF document text
    • https://pizazolumugi.weebly.com/uploads/1/3/4/0/134016987/rikusuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481675/normal_6029422feac76.pdfIn PDF document text
    • http://jobware.pro/92323927484y8euz.pdfIn PDF document text
    • http://energierecrute-emplois.com/allen_bradley_plc_specificationrd7pv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485163/normal_60009fd09f729.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449185/normal_6000ad0a6cda5.pdfIn PDF document text
    • https://wisejagu.weebly.com/uploads/1/3/4/8/134881465/f2af25de.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ic1dlYi/23669290596.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495974/normal_5fdebb9db96a7.pdfIn PDF document text
    • https://mibofadap.weebly.com/uploads/1/3/1/6/131637701/lufiwiwegu-guxud-fakenave.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/IenhhYL/coffin_nails_shorter.pdfIn PDF document text
    • http://csxmoney.info/head_basketball_game_2_player4fmky.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456391/normal_602d582f7b96b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425515/normal_5ff22c175676d.pdfIn PDF document text
    • https://ropidofizo.weebly.com/uploads/1/3/0/7/130738616/747a8135.pdfIn PDF document text
    • https://pefemodadiz.weebly.com/uploads/1/3/4/5/134520562/1083eeaa42a.pdfIn PDF document text
    • https://cdn.sqhk.co/lojadisexudo/r9jfvic/summer_word_search_printable_hard.pdfIn PDF document text
    • https://gawudizilox.weebly.com/uploads/1/3/5/3/135300959/juran-dawel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7B 5012 bytes
SHA-256: 6da72c9ce9710fbd2c5b7e9218bc1318f5d62e9e4fad371575f96612ce2cab77
font_01_sfnt_off00011f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F99 11952 bytes
SHA-256: 0fb032a460bc4f16cf704583f437700797d5b325d19a2df36fe46a9156740dff

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