Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8e1ab230eccfe7…

MALICIOUS

PDF

96.0 KB Created: 2021-05-15 07:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: db4b250cd27b19bd520f08231b41e108 SHA-1: e4703c43a53bc34224d3542b4ada762b783cec22 SHA-256: 4b8e1ab230eccfe7a57d77fd7d958066d9c3e3061b58c14059a1e4764e252187
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 0.9997

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://baarspo.ru/strik?utm_term=python+machine+learning+sebastian+raschka+3rd+edition+github PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372983/normal_603a558e1977f.pdfIn PDF document text
    • http://bullbananavannaone.xyz/should_you_read_the_bible_in_chronological_orderjpknv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445881/normal_603edab73ffbc.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/advanced_calisthenicsxrt38.pdfIn PDF document text
    • http://luminar3-download.xyz/4053031543k4xf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379970/normal_5ffcdbd91241d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_6021856ce3766.pdfIn PDF document text
    • http://avtoshtorki.shop/8_steps_for_conflict_resolutioniqg25.pdfIn PDF document text
    • https://ribafiligizeki.weebly.com/uploads/1/3/1/4/131438260/gexuw.pdfIn PDF document text
    • https://dexajaxalujum.weebly.com/uploads/1/3/1/8/131857565/sibes_suxuvawilel_gulor.pdfIn PDF document text
    • https://mexilaret.weebly.com/uploads/1/3/0/7/130775974/8487944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483602/normal_605c1b2be4e74.pdfIn PDF document text
    • http://futup.ru/fimikelogj7ghk.pdfIn PDF document text
    • http://basvuruizleme.online/garmin_astro_220_for_sale_australiatpx5a.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/pevuwarobuvowa/common_core_sheets_subtraction_with_regrouping.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/rezasodek.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/common_interview_questions_and_answers_sample.pdfIn PDF document text
    • http://riberudedanute.epizy.com/26286454548.pdfIn PDF document text
    • http://xemozof.epizy.com/putiwufunineliwu.pdfIn PDF document text
    • http://rubidolad.epizy.com/wudibov.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/who_is_jairo_in_counting_by_7s.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_off00013794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13794 5824 bytes
SHA-256: 484cd61a22697b11ec7771a4ac0f439b0ba99389970512d80f44ef1edb0d14ee
font_01_sfnt_off00014b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B41 11344 bytes
SHA-256: d62b64b1abee2f9d742e98985f9a2366606d0308a4d5c48075eb713df195ff07

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