Malicious PDF — malware analysis report

Static analysis result for SHA-256 b335d861f5dbecf3…

MALICIOUS

PDF

138.2 KB Created: 2021-02-20 20:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ae9ef27bab2d62afb2da7b4402610c9f SHA-1: 8ec9d6a797711a19b431edf1aea484e171009e4c SHA-256: b335d861f5dbecf31af778b28c8d9ff235422a84fcae24b2ce2681eabe59f75b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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
  • 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://seumenha.ru/strik?utm_term=cost+of+living+index+world+cities PDF link annotation
    • https://cdn.sqhk.co/jisaside/ilhh3Is/42094571279.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486763/normal_5ff27455f3e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484169/normal_5fd0e86d5cc2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417659/normal_60050c5faa9d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_602996ab88cdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460678/normal_5ff42b6fd33ba.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/Iidhiij/absorption_line_spectrum_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493266/normal_5fdb77976b174.pdfIn PDF document text
    • https://cdn.sqhk.co/fakozunada/igfhhZQ/defofitu.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/Sjhihgg/46414060728.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/jeduzizonox/rinaza.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/33804470436.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/psychology_101_final_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/funny_get_well_soon_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/lofir.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6FD 5104 bytes
SHA-256: d48c7a829a5e987e2ab78f24ac326b466481644925633971a630790c47fc2115
font_01_sfnt_off0001c881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C881 5284 bytes
SHA-256: 0dfad279a331ac06bb616283687605a4d2ae5159cf23a4a04f8eb833f4768740
font_02_sfnt_off0001daf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DAF0 12156 bytes
SHA-256: c8b8a440ff6f45b40f800e1d90084e08cdf495e491a969f214373d89bb9d823a
font_03_sfnt_off000203e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x203E5 16544 bytes
SHA-256: 69e9da043e5af9456dd4ae0e639303bebd5f13b05a6c1ee2518c595973fc913b

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