Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d2895b82b718c8…

MALICIOUS

PDF

127.9 KB Created: 2021-03-10 09:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fdf6a927fd7b3681b5400ec2be1b3012 SHA-1: 64eb07156726452e0b099b2c0481002942bbf9df SHA-256: 43d2895b82b718c883d6769f9537ffa20cfcf6651bd273b0313e40c0cf7bd00d
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 0.9994

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/aws?utm_term=what+is+different+learning+styles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501659/normal_602d531c3fdaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_601976484cf6c.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/ggjab2D/react_js_todo_list_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5ff5f0e0929dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501042/normal_5ff41373ea49f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453885/normal_5ffdf745d0752.pdfIn PDF document text
    • http://jalogeteka.iblogger.org/bot_like_instagram_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/aHip7hh/mosquito_helicopter_for_sale_in_usa.pdfIn PDF document text
    • http://jovefupe.mywebcommunity.org/76452443619.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393754/normal_5feddae5570fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413967/normal_5fedd10ac3527.pdfIn PDF document text
    • http://sovolox.getenjoyment.net/vokatetaxarejutedux.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://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_d658491cf79d403e8b3a1e80ac65cd42.pdf?index=trueIn PDF document text
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_1682f5d6ec834bd9a340b0b905c1ebd7.pdf?index=trueIn PDF document text
    • http://metorudadoz.rf.gd/bushnell_neo_xs_update_deutsch.pdfIn PDF document text
    • http://pawepeg.atwebpages.com/2nd_grade_minute_math_worksheets.pdfIn PDF document text
    • http://kewugozosefo.epizy.com/why_did_my_canon_printer_stop_working.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/regeturunuxakuvojovado.pdfIn PDF document text
    • https://2386e270-bd20-42c1-b3e5-1ba7eaa1d68d.filesusr.com/ugd/b4f0c6_0aa4b709437c423781471d02b80ee350.pdf?index=trueIn PDF document text
    • http://wuzitipajupenok.rf.gd/what_do_daruma_dolls_represent.pdfIn PDF document text
    • https://528f6e5c-6927-42ef-b7a5-a8f9c349750c.filesusr.com/ugd/07b979_de7f1add7b644249a483f363b0db0c24.pdf?index=trueIn 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_off0001ab29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB29 4964 bytes
SHA-256: 87790c599a4cf23fdba940a6fcf53efb4493c2c307bc2d2bf682af23dc8e6f5e
font_01_sfnt_off0001bc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC05 11844 bytes
SHA-256: 61638707e9882b70d9c5c454276f21d8e46d919480e59e50bffa7803358f1591
font_02_sfnt_off0001e362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E362 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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