Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0eec39f2d24fb19…

MALICIOUS

PDF

75.0 KB Created: 2020-12-17 00:40:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a0576ed31d2f4457bb6984efc75ea436 SHA-1: bca2d644f7f4da4a6620e47c8766a165024b6a23 SHA-256: b0eec39f2d24fb19e12e5a5e840c94e6df978aee1753038771f2d8499c12ea3f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a phishing site. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL is a strong indicator of its intent.

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://traffine.ru/strik?utm_term=winburn+middle+school+lexington+kentucky PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492897/normal_5fc2f628c6d0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5fd64db39f4cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b781cfc-e207-441d-b302-ecb2b57517b1/77255208823.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35ec0405d5340f3397707/t/5fcd11741e1a4d7de12fe3c7/1607274868891/8310925729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8240a7b-fe83-4572-babf-b96634c10405/black_and_decker_smart_battery_charger_manual_2_4_6_amp.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17ddbf9866f3fd2d885d9/t/5fc34e64e18c5c478e658472/1606635109468/senuraxigilitud.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/muzzle_flash_footage_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50518e9fc3622d53c627c/t/5fd01848a040431536b1966e/1607473225950/island_villa_apartments_corpus_christi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf72f5147b14804f87937/1606285105403/mifoven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0177e4c-9497-487a-808b-819c39107fdc/judidunojinakanufazazinam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ce038139af037666b757/t/5fcfaa7168c18617d41c1837/1607445108808/fixture_champions_league_2020_21.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_off0000e6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F6 5532 bytes
SHA-256: e31769a143c8ac7f4aae1745e0c1ba5d0d868d84ec6e33273eec059a4cf46194
font_01_sfnt_off0000f9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A7 10980 bytes
SHA-256: a4f3a9504134beeb4c931e2de94311e06ed14fee590afd2cb3ffc395e6b00e94

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