Malicious PDF — malware analysis report

Static analysis result for SHA-256 5181a195af5f96df…

MALICIOUS

PDF

76.2 KB Created: 2021-05-05 19:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ca6b64abcd750fa35f6c1f058d0b2cda SHA-1: 2c1ff3f1f5c3fbe11f5918a8b51d89b4e721743f SHA-256: 5181a195af5f96df7fd138ec600e221fa3e5eb8a3042c6c004ae212b633db9f2
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 0.9996

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://crophysi.ru/strik?utm_term=descargar+drivers+impresora+samsung+clp-325 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474723/normal_5fc7ccde06642.pdfIn PDF document text
    • https://cdn.sqhk.co/fazejitev/8TghTOX/62851232651.pdfIn PDF document text
    • http://karnaval.host/69179528570o8p0p.pdfIn PDF document text
    • http://hydrofthol.space/75178994602bl9uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_6015062f2fed7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495254/normal_5feb4c3e71620.pdfIn PDF document text
    • http://filanion.online/dizazepomoselevo1bdt5.pdfIn PDF document text
    • https://cdn.sqhk.co/diridenafa/2OfibZ5/90413730376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487381/normal_5fe56df26869d.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/acceptance_criteria_scrum_template461hh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380380/normal_5fddc624bb60c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497109/normal_601ffcc66e991.pdfIn PDF document text
    • http://canonsburglake.org/factoring_quadratic_expressions_worksheet_answers_algebra_2w0uv8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426812/normal_5feb4c0529858.pdfIn PDF document text
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/1f671f5f66b0af5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489724/normal_5fdb1e0179f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387928/normal_6066df793a8b2.pdfIn PDF document text
    • https://juxapokidopelif.weebly.com/uploads/1/3/1/6/131606881/7997981.pdfIn PDF document text
    • https://cdn.sqhk.co/pabulibig/1BKnjjZ/archery_master_3d_pro.pdfIn PDF document text
    • https://nujamoxe.weebly.com/uploads/1/3/4/2/134234607/309864.pdfIn PDF document text
    • https://cdn.sqhk.co/podoxato/ceFiigd/extra_loud_ringtones_for_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529697/normal_5fe8c0dd8a956.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_off0000e6cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CD 5904 bytes
SHA-256: c6972ca990f94fdaed63e97ae0384766a60dec9ae5da9116fdf997cf7805b1bb
font_01_sfnt_off0000faeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEB 11684 bytes
SHA-256: 615bd5c568321c2347674ab76fe8112001183b144d30f2ca90354fd6f6632f2f

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