Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1a2b65fab4a0ac…

MALICIOUS

PDF

76.9 KB Created: 2021-04-16 20:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8b6e748daa6181c46ab99b78776a4143 SHA-1: cee610e70d6bee69bd92831758e5048e98ec4b94 SHA-256: 9a1a2b65fab4a0ac28c4a0ea735292e2567c2a174b9eec4ce482bd8fd62a35e2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=frases+de+cien+a%25C3%25B1os+de+soledad+con+su+pagina PDF link annotation
    • http://zazuvivilug.iblogger.org/dekejowatukisumabu.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/briggs_and_stratton_500_series_manual.pdfIn PDF document text
    • http://nobelopagix.22web.org/lagu_atika_edelweis_surat_undangan.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/nikon_d5200_lenses_compatibility.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/holy_bible_in_tamil_free_download.pdfIn PDF document text
    • http://zemegazi.22web.org/10559801284.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/thank_you_mr._falker_by_patricia_polacco.pdfIn PDF document text
    • http://xabudumame.mypressonline.com/define_slavery.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/stihl_hs45_petrol_hedge_trimmer_reviews.pdfIn PDF document text
    • http://bewujasixi.mywebcommunity.org/blackstone_real_estate_debt_strategies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxujewov.myartsonline.com/bukiv.pdfIn PDF document text
    • http://jatexidikebiras.rf.gd/nomarofulamejus.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/9533223532.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/67198426388.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/ford_mustang_mach_e.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/g_shock_ga_1000_1a.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/mobile_pedometer_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/336a50d8-3ac6-4981-8d96-84bb46c5825d/80395329253.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/the_cradle_the_cross_and_the_crown_an_introduction_to_the_new_testament.pdfIn PDF document text
    • http://betakudo.atwebpages.com/html_codes_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d501b33-4d8d-4e26-905c-2f2863abb6ad/summer_escapes_filter_pump_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/thank_you_very_much_indeed_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/432039b5-b504-4836-857c-10e7a5f3151a/motorola_droid_mini_sim_card_slot.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_off0000ec70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC70 5408 bytes
SHA-256: f7f5044a8eb2e071adfd8a8699a808ade477cee0622fe6848e40aa724ecc6c69
font_01_sfnt_off0000fea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA0 11412 bytes
SHA-256: 8613550462546c06921c48743963d870000cddda9abb3b7224087194d0e44e9e

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