Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c179edcc7ba08d…

MALICIOUS

PDF

84.8 KB Created: 2021-02-01 10:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d378b46e5ba4b57a68a955a306cd5db4 SHA-1: 22d0cd9c982b365aeeed2924eee5be5508d98488 SHA-256: 07c179edcc7ba08da7f4753c7a15ddc8f39a85834833f41bdb89cf9f01b8c13e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'https://baarspo.ru/123?utm_term=hot+cartoon+character+female', which is likely part of the phishing lure. The document body, though heavily obfuscated, suggests a deceptive pretext related to 'hot cartoon character female' to entice users to click the malicious link.

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://baarspo.ru/123?utm_term=hot+cartoon+character+female PDF link annotation
    • https://cdn.sqhk.co/bedazume/9nkAEoo/cyberlink_power_media_player_12_update.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483359/normal_5fd9c8dddb04e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471959/normal_60171a67ce485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420432/normal_600ce5edda95f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464996/normal_5fca06d1b2a14.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/kukupunopedon/photography_contract_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/campus_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/xepavazeritusesel.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/sufesadelifumezore.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/najbolji_antivirusni_programi_za_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/21211209752.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/zivijodanogotajusepeve.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/busebozoka.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/project_management_communication_plan_template_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/lonujo.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/5582938129.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_off000112b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B2 4904 bytes
SHA-256: c25d631131af63e059aec6bf1c96445da386333795b4d4640cffb7f261fa44b1
font_01_sfnt_off00012333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12333 10344 bytes
SHA-256: 9eb46ec1821f911b7647bdeff4d3949f830cc203c3ce54922b803f2c3a63dea5

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