Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d60886b69623c04…

MALICIOUS

PDF

74.6 KB Created: 2021-02-15 02:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a75f650ee8388e8b43ef41ea59db23f0 SHA-1: 0e1c6240d8c13cd2e370bb1f219329a6b097f94f SHA-256: 6d60886b69623c041f14d43153b4e4514d6c42fbb4bb62e8bb4d089287b89e25
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful external resource.

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://seumenha.ru/123?utm_term=calculate+mass+of+tree PDF link annotation
    • https://cdn.sqhk.co/juduxijumijo/eV7ggg4/xipatolulos.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/YDXkHgc/slither_io_hacks.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/hifhbid/learn_python_offline_tutorial_and_interpreter_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/uliigh0/xexanug.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/j0jcjik/sound_effect_free_download_youtube.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/bezutu/apis_mellifera_carnica.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/rebeturajenoxexod.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/all_india_result_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/b_a_s_i_c_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/anabolic_steroid_abuse_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/54295789740.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/bodyguard_full_movie_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/tusovukelo.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/alphabet_phonics_worksheets_for_preschool.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/chief_clinical_informatics_officer_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/65330711900.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_off0000e854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE854 4932 bytes
SHA-256: 3921a820fa179cc631d55184a7090bf7b91b8f50d4570b2cd49b3d29d8aa73e6
font_01_sfnt_off0000f904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF904 10804 bytes
SHA-256: 81c9574cb76e523dda01c5e780935c9e130e31ce8c39bcb1a51d9e06fad9e0a6

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