Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f616312fc33c5a…

MALICIOUS

PDF

192.3 KB Created: 2021-03-24 21:35:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8f001ae41f8b8d393340de06b35e2a75 SHA-1: 54ea3cd2f4a3b26274c8a66cc740ff703d353963 SHA-256: f4f616312fc33c5a9544ce20716bb66d04feab3f6c4d1b63efe15b9b1895b57f
96 Risk Score

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 0.9998

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://leonvi.ru/award?keyword=sales+and+marketing+definition+pdf PDF link annotation
    • http://tazikuruwuwozu.22web.org/wavibedojepi.pdfIn PDF document text
    • https://pikupazu.weebly.com/uploads/1/3/4/5/134577858/6629a.pdfIn PDF document text
    • https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/66d27348c5c.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/walanup.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/mexawuxafubawo-saboral-vopobalonete.pdfIn PDF document text
    • https://gapuropiti.weebly.com/uploads/1/3/2/7/132740804/zilotavazunud_wavaz_fipakavefogulon.pdfIn PDF document text
    • http://kotudekudoges.getenjoyment.net/vepomiwesujorilirasugade.pdfIn PDF document text
    • http://afracheat3.xyz/ben_10_alien_swarm_online_dublat_in_romana7uadc.pdfIn PDF document text
    • http://gefokugok.getenjoyment.net/bidebatukina.pdfIn PDF document text
    • https://sabalijazot.weebly.com/uploads/1/3/2/6/132695986/vosar-vaxopisak-jumijaburefuvu-sakoketetu.pdfIn PDF document text
    • http://blockhcain.host/leredepabedude6slal.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/sifetupomizujanezoxokojex.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/retisovojor/28348319463.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/jukoboridevajovejipetid.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/kemesumogewekurorupemaxub.pdfIn PDF document text
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_69a5804471074c38ad783a138967a4c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/dir-615_firmware_dd-wrt.pdfIn PDF document text
    • https://438e95ed-c264-4db5-88d3-1a9ca8b91b86.filesusr.com/ugd/733c1f_83570d0f1fe442a1af13f93114e2e472.pdf?index=trueIn PDF document text
    • http://gojupugifoliru.epizy.com/kigos.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_off0002b70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B70E 5528 bytes
SHA-256: 394aaa38db7de729e568b6a084c06cce2e8f4b1172b2db0ea3e342a4a0b1a93f
font_01_sfnt_off0002c9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9C7 12668 bytes
SHA-256: 0c2bc788321a6737e28153f35593fc74b166cd0c619cd2d71fabee4f2f6853a2

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