Malicious PDF — malware analysis report

Static analysis result for SHA-256 1553cd566204b51b…

MALICIOUS

PDF

75.9 KB Created: 2021-03-17 14:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2331d9fc4645ffd5c328efbb8e128cdd SHA-1: 9059edc9daa4eb0379acdacfdaf893e07ed0633e SHA-256: 1553cd566204b51bb2a26b0629bcc292bb28a09fc5b49c1868fbff8e6f91e545
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://dugedepap.ru/strik?utm_term=how+to+make+a+leather+knife+sheath+tighter PDF link annotation
    • http://zezarujewida.iblogger.org/fagusikaki.pdfIn PDF document text
    • https://cdn.sqhk.co/xidupesijij/ja0idkf/44258261818.pdfIn PDF document text
    • http://zexixojusikor.iblogger.org/magazine_newspaper.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/je7GiaA/alien_shooter_2_cheats_for_android.pdfIn PDF document text
    • http://dutuxagedam.66ghz.com/aace_2017_lipid_guidelines.pdfIn PDF document text
    • http://gebigulexejo.sportsontheweb.net/55424681811.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/778756ae-3e0b-46b3-8287-25f33816ceb6/photoshop_cs5_crack_32_bit_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c159cba4-3d30-49a2-9990-510f4be4c956/nuralox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af61c57-23fb-44ed-af19-0712107a73f0/6.0_powerstroke_oil_rail_torque_sequence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a08a3d7c-93bd-42fb-adab-b6902c6f5367/53569617518.pdfIn PDF document text
    • http://sewujajapivix.onlinewebshop.net/71092362028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78b0dbe7-08f4-4720-b400-85e67540d8a7/20307404699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ccdc64-a6f5-420c-a888-d0aed9dfa4cc/sat_practice_test_1_answer_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88a4016-d500-4b47-873b-6e1dea4509ea/fekedetug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51d1a42e-d28c-484b-84cd-ddaef74ef45b/how_to_get_profit_on_forex_trading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a35775c8-665b-4672-996a-859c25e6fd87/mogokuxidexitejese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc92b209-14f3-4726-ae79-fc5a50b729d0/89147594168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99552ace-942a-4a22-94c5-1073dc29e12f/depression_era_cookbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a93738-d035-46a3-a775-5c1c244d2be7/76262077482.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_off0000e966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE966 5300 bytes
SHA-256: c31b30d1544de822fab92222212505d4d89296ee2dff6072374154a4ccc29d40
font_01_sfnt_off0000fb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4C 11612 bytes
SHA-256: 3a7918cada4b7d2821960042da53b893f9cef24025cb5e8c97b103be5cdeedee

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