Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cf4f4f07953121…

MALICIOUS

PDF

72.9 KB Created: 2021-03-21 12:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d80c8ded8475b195757d2b245aeffff SHA-1: d88fd095dcddd69eeb2999b4cc82823434313c04 SHA-256: 59cf4f4f079531218d79ad52d808a83dd73b727b8ea153e7febe23a483bb6107
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for "Optiplex 780 video driver windows 7". This URL, https://botokaw.ru/strik?utm_term=optiplex+780+video+driver+windows+7, is flagged as suspicious and is likely intended to lead the user to a phishing site or a malware download. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=optiplex+780+video+driver+windows+7
    • https://cdn-cms.f-static.net/uploads/4465930/normal_5fdae2c287138.pdf
    • http://gebevojika.mygamesonline.org/libro_de_canciones_para_guitarra_electrica.pdf
    • https://cdn-cms.f-static.net/uploads/4446774/normal_603e35572e1b9.pdf
    • https://static.s123-cdn-static.com/uploads/4369493/normal_5fe560d02270d.pdf
    • http://tixesikixux.mygamesonline.org/fishing_rigs_for_bass_uk.pdf
    • https://cdn-cms.f-static.net/uploads/4424647/normal_605035cbaa37d.pdf
    • https://cdn.sqhk.co/goronikel/eibFiec/wanomidi.pdf
    • https://cdn.sqhk.co/sovokeduseb/61aIShd/gitedepokisawalix.pdf
    • http://fonujameritules.getenjoyment.net/kubajujewelarorazukazero.pdf
    • http://xekalabaxuv.medianewsonline.com/desktop_support_engineer_interview_questions_and_answers_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kewetanetoza.atwebpages.com/gazizurivemiwupemodu.pdf
    • http://titugol.atwebpages.com/vunevimusenosi.pdf
    • https://uploads.strikinglycdn.com/files/b40d73ff-7999-4d40-9b67-4626aff0cbfd/what_are_the_three_types_of_business_activities_explain_with_example_class_9_computer.pdf
    • https://uploads.strikinglycdn.com/files/d16111bb-b28f-4350-87c6-8a3e6bc67032/82513059736.pdf
    • http://jatoxat.atwebpages.com/lenovo_g50-80_ram_ddr3_price.pdf
    • https://uploads.strikinglycdn.com/files/ecb662c5-460f-41e6-ad31-ca9502e46880/lexus_rx_350_hybrid_2017.pdf
    • http://davofunup.onlinewebshop.net/what_is_a_4l80_transmission.pdf
    • http://zonurupadul.atwebpages.com/84915068976.pdf
    • http://fadudenomo.onlinewebshop.net/functionalist_perspective_on_religion.pdf
    • http://mewabetowa.myartsonline.com/barorexikaxofikav.pdf
    • http://mozutulobiris.onlinewebshop.net/verizon_fios_quantum_gateway_router_manual.pdf
    • http://sopexalibip.onlinewebshop.net/hotel_budgeting_and_forecasting.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_off0000dfe5.bin
06209c1534f35ec17fcac6bc4f91556b43280c61d7506dcb401bf487331f4eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE5 5404 bytes
font_01_sfnt_off0000f27d.bin
12ffe96eb5cafdddb5e33ca440cc9f4eff39abae60b58418b0104e764b4eb9c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 10548 bytes

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