Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cb08831957ede8…

MALICIOUS

PDF

94.0 KB Created: 2021-02-24 02:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 88c0d8ab3ba653d7128197c67a2ba1f2 SHA-1: af81605afc2818a01f531180c2ecbd6163860955 SHA-256: b2cb08831957ede8c2e199d26570163d57d7614f50dfa913e035ce2401de1342
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 URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=party+systems+icivics+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387821/normal_600d1341e9958.pdfIn PDF document text
    • https://cdn.sqhk.co/gogerazina/jeiegfp/new_top_100_ringtones_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/rusobotakox/iRijyxz/starfall_com_h_math1.pdfIn PDF document text
    • https://cdn.sqhk.co/fitamorigob/iJjgtQt/40329761200.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/gjPShb0/66878013711.pdfIn PDF document text
    • http://dkblogin-de.best/applied_optimization_with_matlab_programming_free_downloadboqhw.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/fsgmJia/tipurevanelajedodonitinok.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/icgijcC/formula_1_championship_edition_ps1.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/L8FGjeM/welikudemalinikuluru.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/jjhjiEL/5169421162.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/jjjFjeD/jimdo_creator_shop_beispiele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_600be1102c92a.pdfIn PDF document text
    • http://fortuneocredit.com/44321603613s53xu.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jobavo/physical_appearance_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/dotted_bullet_journal_paper_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/what_are_the_eight_major_biomes.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/tebixinewuweforaderaper.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ABE 1644 bytes
SHA-256: 1e8a8a0fa1f092d070f3d135f95cfe16f87eb5a8708dd3712317bebb8096d10c
font_01_sfnt_off000132f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F8 5168 bytes
SHA-256: b0f1382842b4e088d6704dc735777516d11ccbe0ed2a8c18d617da3c6562f221
font_02_sfnt_off00014491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14491 11044 bytes
SHA-256: 51cdfa6b79ba85dc70b589d2a0fb822d12ca77492fa5cad875f8935f048f1c19

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