Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f6136c543266ee…

MALICIOUS

PDF

84.6 KB Created: 2020-12-15 10:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 13c0bbaa60be13639f4dc57bf3a23177 SHA-1: dc77007c9fde7478a884ead636b188abd08bbd8e SHA-256: 65f6136c543266ee79dc68a6292811516f7aa64e1fbe10c5cf924a81944f1f47
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/strik?utm_term=va+dmv+wait+times+lorton PDF link annotation
    • https://munazuzane.weebly.com/uploads/1/3/4/3/134350045/fee3a.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/mexugep_tisumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464077/normal_5fad83a89ece4.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/jesugudilose_nenudasajufoj_wizemozexowom_wuwowudu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f9d583fa9b3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c0c4e98326c02d755ea/1606290445297/visigekebevugu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ce616609fd0ee7aa78df/t/5fc8faab72e4687db8942052/1607006893295/birthday_video_maker_app_with_music_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc785958c9e503d27aa33a1/t/5fce92b8bcd92b20b0445f8e/1607373497256/acoustic_blues_instrumental_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17bfd104edf1d7784f47d/t/5fc5ba5f18e72e5fdb9de18c/1606793823775/categorical_data_analysis_agresti_citation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf02c7cd9942793f25531a/t/5fd5fec0acac596b0cafc445/1607859911675/matufaviletawos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c59a03f04e270fe027bd/t/5fd22e52ebc7ce75e8bc5189/1607609938932/spirit_riding_free_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e6bd3398ff75152e0f70/t/5fcd12935177ea328cc7a796/1607275156435/19635977298.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a7ede9fc3622d52d662b/t/5fc5d73abc819f1cf4a318d9/1606801211826/league_of_legends_summoner_name_check.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d1da56b-883e-4239-8702-be980f5fb4fd/thermomix_apple_and_mint_jelly.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA3 5088 bytes
SHA-256: 87b6d71233673b1c6eefda89f620c826dce2b62f791b84025d16417e65e8bd90
font_01_sfnt_off000120ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EF 10772 bytes
SHA-256: 8969a8c82c2ad18a95b7b36b47d0cef8e34694b5da5cd05a52ab8688b4ac0ce9

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