Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd26357717815753…

MALICIOUS

PDF

78.7 KB Created: 2021-02-24 15:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ef2769b03895cfbeba762b9bed7976e SHA-1: d94ba62dbef1807aead6f1b42bf0b9ed2eb157d3 SHA-256: bd26357717815753ddf8682dff5b2e8b29af3eec7617597f6b7877e672544863
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF_URI heuristic points to a URL that likely serves as a phishing page or a download link for further malicious content. No scripts were extracted, but the presence of external URLs and the ML classification suggest a phishing or credential harvesting attempt.

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://druttle.ru/award?keyword=how+to+propose+a+case+study
    • http://osmosiotzs.fun/dimixihjgy8.pdf
    • http://fofafik.iblogger.org/working_class_boy_ebook_free.pdf
    • http://bitsracing.net/3435498206q5ise.pdf
    • http://fit-italy.space/chew_wga_rarf9bb6.pdf
    • https://fafamamijusoma.weebly.com/uploads/1/3/4/3/134371196/vomuv-kezuwafidida-zuzedomebito.pdf
    • http://carbags.site/54597335800iap2r.pdf
    • http://italia-doc.space/pidofagh7e5s.pdf
    • http://yewes.fun/how_to_use_json_formatter_chrome_extensionn8nuj.pdf
    • http://filanion.online/coffee_lake_r_hackintosh_vanilla_desktop_guidefpu84.pdf
    • https://nokaxogu.weebly.com/uploads/1/3/4/5/134520383/a029f3.pdf
    • http://ujjjrrrrr.space/95317013992vm2sf.pdf
    • https://telabafulux.weebly.com/uploads/1/3/0/9/130969700/sujabozededabon_wesuzewexemu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bajokupubapi.rf.gd/zetosodevew.pdf
    • http://fifusudevop.rf.gd/gaxerijinizuvetovimeloz.pdf
    • http://gipipirerogarul.rf.gd/37016573999.pdf
    • https://s3.amazonaws.com/rudelazifizuvo/78704297245.pdf
    • https://s3.amazonaws.com/zagubip/jelipemageke.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7d6.bin
459450e995caf65f53f3800f45e3fb11e31f54b6e69803506c3af449e88bc0e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D6 5192 bytes
font_01_sfnt_off000109a2.bin
80705aa5969d6ceba12cecf7d913784b740e4e6730a04d6db0b70d0737cac648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109A2 10600 bytes

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