Malicious PDF — malware analysis report

Static analysis result for SHA-256 d199d4c6bc57df25…

MALICIOUS

PDF

76.5 KB Created: 2021-02-18 16:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8cb8da8003206b2a477d078eff600d3a SHA-1: 34ea66a4b1a3e64c1ed8b49bf1a7458e01d4dbec SHA-256: d199d4c6bc57df25fa5e1b3ccf65f7b68ade5bfb6c88073439de072feb12b3c3
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/wix?keyword=graphic+artists+guild+handbook+pdf+free'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection further corroborate the malicious nature of this PDF.

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/wix?keyword=graphic+artists+guild+handbook+pdf+free In PDF document text
    • https://cdn.sqhk.co/xawuboma/5jDlggJ/kisovubomumivet.pdfIn PDF document text
    • https://cdn.sqhk.co/semoxumid/idhjTib/ludovico_einaudi_nightbook_sheet_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453902/normal_5fecf4149ec10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421778/normal_5fcdc34957b3b.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/bibejovixapis/leg_cellulitis_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/superman_wallpaper_images.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/3d_anaglyph_games_free.pdfIn PDF document text
    • http://veluvuwipigunuw.rf.gd/61476634064.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/macos_catalina_10._15_gm_seed.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/sosav.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/trade_company_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/marginal_costing_in_management_accounting.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_off0000ed7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A 5652 bytes
SHA-256: bd3ab27347e5ea98e5e1de7c863b238117ea578c6eaf389ec808266493fb8fc2
font_01_sfnt_off000100ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100AB 10768 bytes
SHA-256: 28fc91695ea920a289ead270a5701bc0f98b41cc274f5869f25d4e474c99ba06

Open this report in the interactive analyzer, or submit your own file for analysis.