Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe6a4c5602fd39d…

MALICIOUS

PDF

67.8 KB Created: 2021-05-11 05:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9ee5a7ff1ae3e689a0be4eefc782f240 SHA-1: e77962b0709c7d73a101a1d1ac086ecfda5b4816 SHA-256: efe6a4c5602fd39dede6537b82332daf0c2fd8b8453a4e019fc5c8730727ca8d
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/strik?utm_term=how+to+charge+a+simplehuman+mirror PDF link annotation
    • https://cdn.sqhk.co/runudori/bjbTJhg/bolejataraxazifebupukegi.pdfIn PDF document text
    • http://leoidet.xyz/juxutizikusizolelozisirqz206.pdfIn PDF document text
    • http://nafigunagofadab.getenjoyment.net/cascade_control_loop.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/92431289006.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/dgfR4jf/car_mechanic_school_cost.pdfIn PDF document text
    • http://voztrans.ru/xefiporedatagnuf76.pdfIn PDF document text
    • http://remont-pc.website/english_spoken_course_near_mem2fnj.pdfIn PDF document text
    • http://pixell.store/what_is_in_the_beyond_sausage_at_dunkin_donuts67l8q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c9e952-c184-4cd5-a373-82bb6cd8d1b2/como_aprender_ingles_rapido_y_facil_en_casa_gratis_para_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb2d80e-ef9b-48a0-83ba-a285ab7b54ff/refawovapo.pdfIn PDF document text
    • http://jimanujomubil.epizy.com/credit_report_meaning_in_business.pdfIn PDF document text
    • http://fawikinego.myartsonline.com/refugee_alan_gratz_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/feriados_puerto_rico_2020_oatrh.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/articles_of_organization_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/garmin_nuvi_2757_lmt.pdfIn PDF document text
    • http://xalesikejuxo.epizy.com/tebon.pdfIn PDF document text
    • http://lemagokumir.epizy.com/logiredujopo.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/megelifaburagenuzanaveba.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_off0000cd5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5C 5400 bytes
SHA-256: c7b21d4cd08b00c69f00890cd1d77301841bfca0149e1052b57c8082d803606d
font_01_sfnt_off0000dfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 10224 bytes
SHA-256: 999697ede993566a1b60fa16d604dce2bbdd25d568efcd4902223c70b58765ec

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