Malicious PDF — malware analysis report

Static analysis result for SHA-256 674267825f352f70…

MALICIOUS

PDF

77.8 KB Created: 2021-03-16 20:12:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd8732353ecf713ac6eb61d46d365a5 SHA-1: e880bc61671918f1a045b972ef2fd1b3c6320ebd SHA-256: 674267825f352f70ceb5f6a93c8de77c2dc729c935c9dc4f2590627eddcd282d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://botokaw.ru/wix?keyword=modular+origami+polyhedra+pdf
    • http://reduslimitaly-official.site/does_texas_have_a_sales_tax_on_food300gd.pdf
    • http://vavazexowupex.medianewsonline.com/99546028226.pdf
    • http://reassurez-moi-fr.info/malimulekovago0vh22.pdf
    • http://tibagisuminove.sportsontheweb.net/32450781641.pdf
    • http://kenugizi.getenjoyment.net/what_do_punctuated_equilibrium_mean.pdf
    • http://copyright-central-media.com/27659966168hpiq3.pdf
    • http://dowinonajapa.iblogger.org/population_characteristics_ecology.pdf
    • http://exampl1214.com/item_analysis_template_exceldwfej.pdf
    • http://moresukko.ru/letosuvobokexufereko2oq7i.pdf
    • http://dujalubudekir.22web.org/87973847132.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_1ab1f7ab4df2406ab3477c751a954eb8.pdf?index=true
    • http://muwumatenenuli.rf.gd/doubling_rule_for_spelling_worksheets.pdf
    • http://dijuruxowasi.epizy.com/busqueda_de_informacion_cientifica_slideshare.pdf
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_fb05b7d42cb4469d9a722348f5f691c0.pdf?index=true
    • http://pufasetidovido.epizy.com/josarafawomobigazezif.pdf
    • http://kavigadakubowaw.epizy.com/how_to_arrange_pages_in_order.pdf
    • https://uploads.strikinglycdn.com/files/0c3192da-2e7e-4c79-927b-7115c575ae8f/how_to_get_engineers_elite_dangerous.pdf
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_e2cd90e932b1475bb43e360c8768ff3f.pdf?index=true
    • http://lotapit.epizy.com/ireport_report_inspector.pdf
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_99f7bfc6aeef4853b866dff6c2788bfb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/22934cee-a59d-43cb-8a49-bc6625b9e9f6/jewotusogasatiwala.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_off0000f21e.bin
4621f77662819202dcf4ac6a54f76f97f801eef94ed733d71b2f1c515d4a4783		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF21E 5384 bytes
font_01_sfnt_off0001045b.bin
ee7a70da4af274c34f43979d52080d8c23cbb9f43ac6cc2255d96418ed150b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1045B 10976 bytes

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