Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a368624f9f385b8…

MALICIOUS

PDF

74.3 KB Created: 2021-03-09 10:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00068183ecd2f504754e39926532c80e SHA-1: 0353c82914b1bec02f82df6497f6d21e3c528ca9 SHA-256: 7a368624f9f385b8d5271d10a47584ddcdbd59fef2fc2d1b3116f618710061a7
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution domain. The document body, though truncated and obfuscated, suggests a lure related to online banking, aligning with phishing tactics.

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/award?keyword=advantage+and+disadvantage+of+online+banking+pdf PDF link annotation
    • https://cdn.sqhk.co/tijinujul/iesjaTA/the_castle_game_trophy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/jhPbHia/85260421446.pdfIn PDF document text
    • https://cdn.sqhk.co/tobajizil/6AT0Z8M/zabotuvoz.pdfIn PDF document text
    • https://cdn.sqhk.co/pozusonitid/Mdddgex/12578098542.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/ehjaibl/36604339573.pdfIn PDF document text
    • http://lagefimuzupu.22web.org/how_to_drain_kenmore_500_washer.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/icYhhjd/50316765128.pdfIn PDF document text
    • https://cdn.sqhk.co/simikimira/igjfjg8/ielts_vocabulary_words_list.pdfIn PDF document text
    • https://cdn.sqhk.co/wobimore/khbicPr/66669837980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tolamepaduxeju.rf.gd/fabemujukuxunulugidofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9bfd3cb-0ba8-4828-a048-d12f6853e68d/pec_241_aprovada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/400650c1-7057-48b6-b5e9-629f3d27455c/what_flex_is_a_5.5_project_x.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36775f18-2458-4c8b-84bd-af175d8d8031/how_do_i_reset_my_sony_bravia_tv_back_to_factory_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/67346002951.pdfIn PDF document text
    • http://pokazirajig.rf.gd/dobutamo.pdfIn PDF document text
    • http://pekarenov.rf.gd/elevator_speech_examples_for_nursing_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292afeb8-f9cb-421e-b1d9-19bdd047d7b7/91922314226.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/18476598681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1600ebc7-cdae-4f49-b545-7a0ed6fdcada/40783939800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be20a36b-4d02-4210-918b-7d4f6f1b39ea/how_does_apneic_oxygenation_work.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_off0000e67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 5368 bytes
SHA-256: e4c964b29c3ef3742f574af595aa9f266800324ce3883ce6bc23bab9db54a6ee
font_01_sfnt_off0000f8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DC 10148 bytes
SHA-256: 4bf1ef7439a2f54a96b6c7470f49fa77de959b5864c109c645f8c2d2781b9975

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