Malicious PDF — malware analysis report

Static analysis result for SHA-256 63cba9e42c1c8e8e…

MALICIOUS

PDF

68.2 KB Created: 2021-02-20 09:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9fef189ff2e39193c472da6821c7d2df SHA-1: 5b82cf232602130c45a8397a5cdbfccd209eae32 SHA-256: 63cba9e42c1c8e8ed1954520843558727b0ba3080d53f37a0f9176363c2c3fb2
96 Risk Score

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 0.9998

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
  • 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://baarspo.ru/strik?utm_term=scott+pilgrim+comic+color+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450624/normal_5fd86aa7c7bef.pdfIn PDF document text
    • http://verifedform.com/sinegabosowigupavirufijoguib.pdfIn PDF document text
    • http://studyweb.site/mymathlab_college_algebra_homework_answers2c79e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446038/normal_6030282307931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fe8605c145c6.pdfIn PDF document text
    • http://springwin.space/plain_city_weatherkmkh2.pdfIn PDF document text
    • http://tixshopclub.fun/8968097643h6j35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382780/normal_5ffa2eca145c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371258/normal_5ffa84313f7ae.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/tuletivotarupu/hiv_aids_basic_information.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/2nd_law_of_thermodynamics.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/contact_list_template_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/mikakudofobiranuzep.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/difajifakuwusovewuge.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/dexovoroluvikosezabik.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/kasapu.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/modomaruvinapebedu.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_off0000cbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCC 5192 bytes
SHA-256: e613e20fb76a9cf7de759407dede8815ddb8d9c49eb0e16006d4ebbeca087c95
font_01_sfnt_off0000dd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD66 11836 bytes
SHA-256: bd64dc3cb5daa20f5fb92513cbf636e406fe72447d3778247f5aa61cb127ec93