Malicious PDF — malware analysis report

Static analysis result for SHA-256 325623c924ecb4a8…

MALICIOUS

PDF

82.2 KB Created: 2021-04-08 04:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 37379ddaec853d1b43ab5b8e5b2ee591 SHA-1: 83035c4fec700414d17acf667ff8c555eb870b13 SHA-256: 325623c924ecb4a84c804101dee2921266f99e62bf7e825ac4f03c55e3d66f84
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 0.9998

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://kuzutuzo.ru/123?utm_term=federalist+papers+10+and+51+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407781/normal_605c2e5468232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_606982fabe81e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487399/normal_6007bcc5ba86d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_6065cb5f8063d.pdfIn PDF document text
    • http://avit0.pro/assassins_creed_dual_action_hidden_blade_blueprintsbwkfo.pdfIn PDF document text
    • http://lollipopa.online/vatetup9hzsu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417645/normal_604ae71556e72.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/xukanomarexumu/9673370098.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/jcb_4dx_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/msi_error_2761.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/3dmark_windows_7_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/local_weather_report_nyc.pdfIn PDF document text
    • http://xiwinuxad.rf.gd/antegrade_cerebral_perfusion.pdfIn PDF document text
    • http://miginuguf.rf.gd/is_there_a_part_3_to_the_collector.pdfIn PDF document text
    • http://kavigadakubowaw.epizy.com/82565827924.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/56892775961.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/23659309235.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/left_hand_of_darkness_movie.pdfIn PDF document text
    • http://vudagolefedofa.epizy.com/board_discussion_paper_template.pdfIn PDF document text
    • http://noxudovo.rf.gd/padedepokejavupebe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001059e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059E 5476 bytes
SHA-256: 4c91a12a6f9f4e83ffa8b2afd339cd3766af89b4721747ba6bd262f81d800643
font_01_sfnt_off00011850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11850 10412 bytes
SHA-256: ba68db1836bbc87b2b007d25202549d8790a94ccf9d0e37301cc90b67e674912

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