Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcd467d8b31fb2a…

MALICIOUS

PDF

197.9 KB Created: 2021-03-08 03:42:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: b8525e2ec462906217fd8322c0769695 SHA-1: 873f28eee09887f3a5cb55d7169efdf626e7c428 SHA-256: 2fcd467d8b31fb2adf56e90fa3068569c03a3cc1b2a851035c088e1c9d2398d8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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/123?utm_term=what+happened+to+nads+on+rover%2527s+morning+glory+2019 PDF link annotation
    • http://tejidetegowewi.iblogger.org/47113838719.pdfIn PDF document text
    • http://tubujek.iblogger.org/redif.pdfIn PDF document text
    • https://voxesisa.weebly.com/uploads/1/3/4/3/134349259/01ae1e2ad97be.pdfIn PDF document text
    • https://jigugelelatowo.weebly.com/uploads/1/3/1/4/131437208/raxajomazev.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/4817285.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/tinowaroli.pdfIn PDF document text
    • http://golixudib.mypressonline.com/bitnami_wordpress_download_mac.pdfIn PDF document text
    • https://namonivet.weebly.com/uploads/1/3/4/4/134493383/9dab41bf4cfad.pdfIn PDF document text
    • http://jurofenopoxu.iblogger.org/cisco_vpn_client_ubuntu_16._04.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/96312708847.pdfIn PDF document text
    • http://majikok.mygamesonline.org/it_jobs_in_demand_in_south_africa.pdfIn PDF document text
    • https://vutubazedo.weebly.com/uploads/1/3/2/7/132740780/1845869.pdfIn PDF document text
    • https://famopenagunabot.weebly.com/uploads/1/3/4/6/134688774/situbitebupifax-mavobu-fidiroro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_e1c01ad06dbc45a5aa978a30af0d7a99.pdf?index=trueIn PDF document text
    • http://netupizorazez.rf.gd/17224599551.pdfIn PDF document text
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_9142d57f3c9244bbaa32fc995d2d1aec.pdf?index=trueIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_4c7bb93d952a4e039fb0edf791149edd.pdf?index=trueIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_4d608ad9f2054636ae32d30db585e480.pdf?index=trueIn PDF document text
    • http://noboxiroxe.epizy.com/mosuj.pdfIn PDF document text
    • https://60ceb029-6f78-4d42-8ea4-15ca08d8077a.filesusr.com/ugd/857e61_6abb76ce365143d6aca4229c0032a9fc.pdf?index=trueIn PDF document text
    • http://fabowifomewod.epizy.com/75921993963.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_off0002cbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBDC 6064 bytes
SHA-256: 6781b57fb961a4c6b78187de01b075894a881bdd4e2e4a6288b8388652394a56
font_01_sfnt_off0002e076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E076 11996 bytes
SHA-256: b712bbcc9488381c9fe78379101572aedadd1ac4f017b2583c6444cf473f0eda

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