Malicious PDF — malware analysis report

Static analysis result for SHA-256 a124060024204af6…

MALICIOUS

PDF

93.0 KB Created: 2021-05-06 23:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c7c28bfd9f1be7d0046a2f07b2e7d8c0 SHA-1: eaa44720834ff7937ae0883fd8e7f36104ddd92f SHA-256: a124060024204af6fcc86567e19abf694afe73bbfcd0babdde598b9974c68cca
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 'https://seumenha.ru/strik?utm_term=how+did+before+we+were+yours+end', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=how+did+before+we+were+yours+end PDF link annotation
    • http://wupevijijoze.mygamesonline.org/projeto_energia_eolica.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450636/normal_600f349423cea.pdfIn PDF document text
    • https://cdn.sqhk.co/wijugilom/whi53v6/predators_90_s_style_blade_fighter_vehicle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416932/normal_605b21857310a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482188/normal_5fed98ad45f97.pdfIn PDF document text
    • http://tagemaruba.22web.org/time_travelers_wife_movie_synopsis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392650/normal_604e1c8870373.pdfIn PDF document text
    • http://paxezimusosesa.scienceontheweb.net/61428398185.pdfIn PDF document text
    • http://waparudadip.mywebcommunity.org/amplificateur_operationnel.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/yIji6jb/52588872544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/posufij/how_to_make_custom_actionbar_in_android.pdfIn PDF document text
    • http://soranodabiwegi.myartsonline.com/act_practice_test_2_with_answers.pdfIn PDF document text
    • http://temipaz.epizy.com/dupavitakitogoxilatiboji.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/xemux.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/al_que_esta_sentado_en_el_trono_acordes_para_bajo.pdfIn PDF document text
    • http://zewogukanonudut.epizy.com/vodavi_starplus_sts.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/how_to_use_texas_instruments_ti-30xs_multiview_scientific_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/59729215407.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/baldurs_gate_2_enhanced_edition_iso_download.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_off000123db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123DB 4756 bytes
SHA-256: 842f3b3d996cbe845b6e563ab1af5e6af7a21d9d40d823575815bf8cbfc26e30
font_01_sfnt_off0001341a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1341A 10736 bytes
SHA-256: 7bc71af913abb21dcff53ff11eb12cecec90b94972a7ccc737bdedb0e608af06
font_02_sfnt_off000158ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158AE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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