Malicious PDF — malware analysis report

Static analysis result for SHA-256 a648ca967f59ea5e…

MALICIOUS

PDF

84.8 KB Created: 2021-03-18 15:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5a6cfbed5323dbd00c321c619082ea4 SHA-1: 5e431acfce3553d153f3c8767e68b9a82c040569 SHA-256: a648ca967f59ea5ebaacc18ecbec8750178fde9059ddae7a087cc1ff4daac659
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URLs that point to suspicious domains, suggesting it is used to redirect users to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/strik?utm_term=cannon+safe+model+numbers
    • http://kalidejomepajo.scienceontheweb.net/what_is_the_romeo_and_juliet_law_in_indiana.pdf
    • http://roboludawu.mywebcommunity.org/lopasib.pdf
    • http://lixodamevurobar.mygamesonline.org/87879236639.pdf
    • http://vugaganopofom.mypressonline.com/tedofogo.pdf
    • http://weridif.medianewsonline.com/93931060909.pdf
    • https://cdn.sqhk.co/butiluluvuk/lNJkZCj/5407752762.pdf
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5fcd9aaf5242b.pdf
    • http://safijejog.mygamesonline.org/list_of_transnational_social_movements.pdf
    • http://gagefiwirimat.medianewsonline.com/pabugogazuriwemukikufabe.pdf
    • https://cdn.sqhk.co/nedovipirumu/cJhihaO/hd_filter_camera_photo_editor_photo_collage.pdf
    • https://cdn.sqhk.co/tapolixoz/8jbggjd/charles_schwab_affidavit_of_domicile_form.pdf
    • https://static.s123-cdn-static.com/uploads/4480886/normal_6003ec0b32943.pdf
    • https://cdn.sqhk.co/dujujema/gcgck0P/zogasijufijujedujek.pdf
    • https://cdn.sqhk.co/munenetifu/iniargf/comparison_of_adjectives_worksheets_for_grade_2.pdf
    • https://cdn-cms.f-static.net/uploads/4428341/normal_60210177da062.pdf
    • http://xulubapatoso.scienceontheweb.net/what_constitutes_a_breach_of_trust_and_confidence.pdf
    • http://kedugobepuged.mywebcommunity.org/12967463867.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rulopumo.epizy.com/a_t_f_full_form.pdf
    • https://s3.amazonaws.com/bokelur/25639307348.pdf
    • https://s3.amazonaws.com/jobavo/95496891804.pdf
    • https://s3.amazonaws.com/salosibejodod/ibn_arabi_quotes_in_urdu.pdf
    • http://tenezozujilajiw.rf.gd/canon_de_belleza_actual.pdf
    • https://s3.amazonaws.com/xowasosuf/jedarufoxikunudigali.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcc3.bin
db72928081ed18c69ae810eb7a6347389dad881b3fa375e5f82763134cde3ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 4968 bytes
font_01_sfnt_off00010d85.bin
64bea411eb6605ccd083f18c9b7645787017c7f2bd48ba40ad967111669269dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D85 12112 bytes
font_02_sfnt_off00013623.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13623 4324 bytes

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