Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b408f34a21538bf…

MALICIOUS

PDF

73.6 KB Created: 2020-11-26 00:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3d6999939d2464f76fdf7e426ee1ec0a SHA-1: 91409fc0cd4fb5b2e0a7ea9e43be20d9e99517d9 SHA-256: 1b408f34a21538bf72278fa8fd60d43e5ede8c8a33faaa6e220b71cb337696d8
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://trafffi.ru/123?utm_term=football+pitches+london PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500447/normal_5fb90fc964e91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448720/normal_5fb8d983ace04.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/wilugugo/pdf_to_word_software_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/95975023145.pdfIn PDF document text
    • https://s3.amazonaws.com/tefelaj/stoichiometry_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/rexaxoziwadofife.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/vce_exam_simulator_2._6._1_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/79202231612.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/jisotadanesonanot.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/100_words_with_their_synonyms_and_antonyms.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/customer_service_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/libro_de_cova_materiales_dentales_gratis.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_off0000d532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD532 4948 bytes
SHA-256: c5b52850d1a8ec7a6c99ae4851a1630b86fdcb6e7157dd9d1e121046b6567f0f
font_01_sfnt_off0000e5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F1 11220 bytes
SHA-256: 1e62ae6d1ca21ed722ba5ab232d81c592915bdd19e231b2221318100463c43cd
font_02_sfnt_off00010bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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