Malicious PDF — malware analysis report

Static analysis result for SHA-256 c879068f38c68621…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 15:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bbd00dc3e0c0fbaf5597b8069bd24edf SHA-1: fa45821aeafe95ac9c75e9d63729096403422f6c SHA-256: c879068f38c68621a50c83b9fa9e391e83158e884fd3d94db9c0a4f229c6b98f
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-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://botokaw.ru/strik?utm_term=what+is+sequence+connectors PDF link annotation
    • http://tefitagesev.mypressonline.com/option_volatility_trading_strategies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493209/normal_601989bbecaee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_6032c2209869a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385863/normal_6012e6e4aa71a.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/classical_fake_book_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404287/normal_5fe78eb71e3d5.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/mean_range_mode_median_worksheets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423750/normal_5fef415d8720f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_6014e96b6b049.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401985/normal_6035f617ab551.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/tutapaxi/proform_hybrid_trainer_pro_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/ashrae_62._1_2007_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/16485766749.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/wikeriguki.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/vowagogevaxezovovole.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/rimopabuzozuwugixos.pdfIn PDF document text
    • http://dezinolabebosod.atwebpages.com/surah_yaseen_full_image.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_off0000e584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE584 4996 bytes
SHA-256: b22a307f8b7cee8479b10fe272305b1e02c09dfb59a3b52511ceead19d98a793
font_01_sfnt_off0000f68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68A 11132 bytes
SHA-256: 0ea31ee26da352e492ca3f4c797a9aac6cc600d420fd7b46952593ceb20e38c8

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