Malicious PDF — malware analysis report

Static analysis result for SHA-256 6893f00321c07c24…

MALICIOUS

PDF

72.3 KB Created: 2021-03-18 20:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f60ad2ef4d92dae96339f08149da50a9 SHA-1: d90c7131efa3e3c823737a39d17f6caaae57c8c1 SHA-256: 6893f00321c07c24871407cab3df964b17124ae0d04bd56a3df00c0cbeee0223
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'seumenha.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=transformers+antagonist+crossword+clue PDF link annotation
    • http://xukoxulopimob.22web.org/celestamine_bula.pdfIn PDF document text
    • http://nimened.66ghz.com/82708255822.pdfIn PDF document text
    • https://cdn.sqhk.co/rerupovev/X4hfwBX/97701460932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_603e86f7c7661.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411700/normal_5ff87061b76c7.pdfIn PDF document text
    • https://cdn.sqhk.co/wevubuse/ehhFgc3/vasulasujojalewadisikuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_6008fe47a92ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448332/normal_6039f5ae5b34b.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/ihjg7xE/escape_masters_manukau_review.pdfIn PDF document text
    • http://gusitolife.iblogger.org/vert_shock_program_free.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/heggxhd/nail_biting_polish_for_2_year_old.pdfIn PDF document text
    • https://cdn.sqhk.co/jikowuzu/jjgcjcT/battle_of_warships_naval_blitz_para_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fogibi/17860666303.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/allegro_free_physical_viewer_16._6.pdfIn PDF document text
    • http://begupegag.epizy.com/1_8_oak_plywood_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/circleci_react_native_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/4541721694.pdfIn PDF document text
    • http://sonowodiguvab.epizy.com/sebiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/kawasaki_disease_guideline_aha.pdfIn PDF document text
    • http://judedinem.epizy.com/what_is_a_social_research_project.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD018 5264 bytes
SHA-256: 64788b195e2731b81567be27b02548da90931d157bbf476a3cf96500ceb9b150
font_01_sfnt_off0000e1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EA 10448 bytes
SHA-256: 24f16dd6d93f612fd3ca941eddacc209b752a4be6703eb1be0d1a673f0bb2186
font_02_sfnt_off00010579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10579 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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