Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb3452a6715e149…

MALICIOUS

PDF

86.2 KB Created: 2021-02-21 23:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: bc0ecef4f91bfd766878a6b45d123354 SHA-1: 9471a23dfb52f59830cd2706a8ca2574f32f5b7c SHA-256: 8eb3452a6715e1497e13e6d0714de2dd810d8712b8a5b4880e0a9b75ac06cac6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The document body, though heavily obfuscated, suggests a lure related to a product manual. ClamAV detection and ML classification further support the malicious verdict. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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/strik?utm_term=toro+super+blower+vac+manual+51591 PDF link annotation
    • http://nububezobuto.22web.org/96021630214.pdfIn PDF document text
    • https://cdn.sqhk.co/vipatemeluti/gMheghc/turning_radius_calculation_airplane.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/jhzf4he/lotepuzox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_5fd33f863f95c.pdfIn PDF document text
    • https://gejilesiwurulu.weebly.com/uploads/1/3/4/3/134374779/kigojasefuto-lariwidiwer.pdfIn PDF document text
    • http://dobewobezusisof.iblogger.org/live_football_uk_tv_guide.pdfIn PDF document text
    • http://bilapak.66ghz.com/palliative_care_guidelines_singapore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_6016a8bb6b32e.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/miliwiripifeviwis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407810/normal_5fd80631614af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sasufufa/honeywell_humidifier_manual_hwm705b.pdfIn PDF document text
    • http://lugirike.epizy.com/corpsman_marine_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/gozekopudawalaxuxog.pdfIn PDF document text
    • http://lufixov.epizy.com/engagement_invitation_psd_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/supebasusavaxelejoxotok.pdfIn PDF document text
    • http://junotilunam.rf.gd/aluminum_composite_sign_panel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/graphics_card_driver_windows_10.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 5408 bytes
SHA-256: d3e21f6311230510e347894786c6676431fa4d95f5d2071d4fddea30e5c19342
font_01_sfnt_off0001157e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157E 11912 bytes
SHA-256: cf55fcd1e064f8d6c9f9fa9593d7d7cfbdbc4bc8f53f38cc1a060ffba07d67d7
font_02_sfnt_off00013d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D8E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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