Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc01017f3e19a89…

MALICIOUS

PDF

73.3 KB Created: 2021-03-19 13:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9b892e1fb6f2023674bedf5be12290d1 SHA-1: 8209e86949e37573adbb61cb357da6678e7cdbb3 SHA-256: 5bc01017f3e19a89f2b04070901ea72cfff6598b1d5325751830d08579b817bd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to technical manuals, consistent with phishing tactics.

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://botokaw.ru/strik?utm_term=electronic+devices+and+circuit+theory+10th+edition+solution+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/sozivowemin/shfplEo/menitasiwibuluz.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/748400.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478933/normal_5ff5812b597ea.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/gidji4m/remove_zero_vector_matlab.pdfIn PDF document text
    • https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/lefoni.pdfIn PDF document text
    • https://kusebavizekofuk.weebly.com/uploads/1/3/4/0/134098677/mumixudazulazunalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443619/normal_6048e216215c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392439/normal_5ffcdefe1bd9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480393/normal_60085e6e8875a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_603a87b051258.pdfIn PDF document text
    • https://cdn.sqhk.co/rosisole/ihigcgf/pitop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_5fd2dcc41597e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474475/normal_60292f4e0d540.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/tufujifinobiro/how_do_you_write_an_abstract_for_a_research_paper_in_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/que_significa_la_presencia_de_cristales_de_oxalato_de_calcio_en_la_orina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14233dad-1b0d-4d4a-a61a-dc3a3b295f6e/how_much_money_do_diesel_mechanics_make_a_year.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/degomawes.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/76904880103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79cc0a48-75a8-42c2-9703-b36244c648ea/what_is_private_cloud.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_off0000de8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8F 5708 bytes
SHA-256: 32bbac27ec2941c7490fa20df2a4cfafb34e007d6bae100f136f2afae9cd3e9b
font_01_sfnt_off0000f1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 10840 bytes
SHA-256: 607ae4c4d787345c586f5901e240dd31d8ef85b6c5148bfa7fee8512349502b1

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