Malicious PDF — malware analysis report

Static analysis result for SHA-256 1388df5a4c9d7d4d…

MALICIOUS

PDF

85.3 KB Created: 2021-04-07 23:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 54347ce32aabb15bb95788cd4953e909 SHA-1: d5c24aae1551c3fbb5dd6ca757711e77bdc530a9 SHA-256: 1388df5a4c9d7d4dd22edc50379679b29545911b262b9e1977f54b3513e916ae
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, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/wix?keyword=gramatica+2+capitulo+1+answers PDF link annotation
    • http://varietystore.website/govotasajujdskm.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/2113817619.pdfIn PDF document text
    • http://likefetevu.getenjoyment.net/34686961552.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/zajasawuloj.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/acetilcolina_farmacocinetica_y_farmacodinamia.pdfIn PDF document text
    • http://zavulibalox.mypressonline.com/66602702005.pdfIn PDF document text
    • http://farvestnn.ru/las_medias_de_los_flamencos_cuentor9zfo.pdfIn PDF document text
    • http://xafomona.mypressonline.com/86332832907.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/45257155763.pdfIn PDF document text
    • http://venolilixe.mygamesonline.org/beatriz_sarlo_escenas_de_la_vida_posmoderna.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/conjunctions_grammar_exercises.pdfIn PDF document text
    • http://esclick.pro/digital_design_morris_mano_5th_edition_solutions_free_downloadmm6lg.pdfIn PDF document text
    • http://fastnoutservice.ru/work_and_energy_practice_worksheet_answers76f65.pdfIn PDF document text
    • http://dafesoxexigu.medianewsonline.com/biphasic_fever.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://durenifujogax.myartsonline.com/alphanumeric_series_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/54163836125.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/z_for_zachariah_streaming_ita.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/periodic_table_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/excel_online_tutorials_free_microsoft.pdfIn PDF document text
    • http://gevapugono.atwebpages.com/gulogovekiwofedolodef.pdfIn PDF document text
    • http://xojudemavu.onlinewebshop.net/53487295954.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/17952723022.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/45253004164.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D91 5388 bytes
SHA-256: 9705882331f92cc512771b6f0e402f5cf112ada4a7dc34488d0c4ba305ff03e8
font_01_sfnt_off00011fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE5 11804 bytes
SHA-256: 2d66d0694509a520ccf5ff23ec5c4584ac643c1b19c6dced07d97feaaa23aa2e

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