Malicious PDF — malware analysis report

Static analysis result for SHA-256 20df33aee8e5e9ae…

MALICIOUS

PDF

85.2 KB Created: 2021-04-22 20:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 50c7851a330a7cccf94f6baf1e31fa3e SHA-1: 338274767a76e494a8100d2648e85df9d117afe7 SHA-256: 20df33aee8e5e9ae724fb2f7117b95ded194c86220844af6afba7e2f30a69268
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious sites, such as the one found at 'https://lozipotod.ru/strik?utm_term=ontx+stock+forecast+2025'. The document body, though heavily obfuscated, suggests a lure related to stock forecasts, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/strik?utm_term=ontx+stock+forecast+2025 PDF link annotation
    • https://cdn.sqhk.co/gitopedevid/fiapy9O/fexiretatilemataged.pdfIn PDF document text
    • https://cdn.sqhk.co/gizetinediz/gjfgdgu/vubijevamikatagakamijewos.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/ejcyz0M/faterifakegunuwoduja.pdfIn PDF document text
    • https://cdn.sqhk.co/kevejonob/afhbLig/cod_fish_recipes_in_oven.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gcxSrig/57587194814.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/6hdigjb/calligraphy_fonts_free_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/lumozupa/4hgKMhc/red_dragon_knight_castle_crashers.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/pxhdmhh/62544038227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed4990b-2a86-4347-bee0-58fed3462ea2/11127061187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b13fe51-0916-4bde-8984-00efedcedab8/68688048957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d23bdc9-1156-43ec-a804-8b410426dc7a/49728690382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/495ebe6f-d512-4cba-9c79-3b121f3bf62b/como_realizar_una_ficha_bibliografica_ejemplos.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_67f0e527a39842ffa1d939737a863954.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25c6ae5-e8c8-40bf-b480-e692c228970a/99115377601.pdfIn PDF document text
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_0f11008ae8d84d0fa25ddb5bb610eb07.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd188a0-6fef-45a9-8fd6-6ff0475dc0cb/a_series_of_unfortunate_events_full_book_set.pdfIn PDF document text
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_e4922135eb55480e8bb265a10464fa69.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10f811d-df00-48df-8a3d-896051d94834/wall_street_journal_prime_rate_money_rates_section.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_off00010d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3E 5400 bytes
SHA-256: 39a58e1a3816cb33feab699c350d347fc12ce762240f0fc3811f6eb7681c22fb
font_01_sfnt_off00011fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB7 11736 bytes
SHA-256: 9dd8999106f69ec41a82ad34c6bdda35a226570505f4dac3cbaf061d878e96da

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