Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e119caa008b616…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 23:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 879750c9b2666fb09507b30cdc537313 SHA-1: e9d88369022c2f70617991287dec94d946b7f257 SHA-256: c8e119caa008b6161cd0a2115a7429fb28b63c31086ee12776449e912847a5ca
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, suggests a lure related to 'Como decorar mi corona de adviento' (How to decorate my Advent wreath), indicating a phishing or social engineering attempt to drive users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/strik?utm_term=como+decorar+mi+corona+de+adviento
    • http://rotiwopofeze.mywebcommunity.org/xabiz.pdf
    • http://xamojopilupivo.scienceontheweb.net/joduturekuvutuwotoruf.pdf
    • http://manidat.sportsontheweb.net/school_budget_sample.pdf
    • http://ig-about.net/juruvajevovanajisudrjey3.pdf
    • http://prizinsta.online/marvel_future_fight_quicksilver_guidev2g9e.pdf
    • http://joweponula.mywebcommunity.org/safety_razor_kit_merkur.pdf
    • http://psylath.com/106490503727r1r9.pdf
    • http://rotiwopofeze.mywebcommunity.org/kojimudexasuviwibo.pdf
    • http://findssldz.xyz/photoshop_cs3_serial_number186yw.pdf
    • http://zijafanovidiz.sportsontheweb.net/vosaritixewumumebajigu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jezekemunidup/fadurop.pdf
    • https://s3.amazonaws.com/zafaronivaj/archeage_2019_gold_guide.pdf
    • http://ximuxulizi.myartsonline.com/2063618010.pdf
    • http://molagegivijoxu.onlinewebshop.net/2005_ford_mustang_gt_for_sale_craigslist.pdf
    • https://s3.amazonaws.com/setigafat/abordagem_qualitativa_e_quantitativa.pdf
    • http://dajomilot.atwebpages.com/product_brochure_sample.pdf
    • http://viniwowosur.onlinewebshop.net/52771520606.pdf
    • https://s3.amazonaws.com/somisilegex/54575850716.pdf
    • http://romofimor.onlinewebshop.net/child_development_and_pedagogy_books_in_tamil.pdf
    • https://s3.amazonaws.com/kewakuko/91276819051.pdf
    • https://s3.amazonaws.com/gulapore/mapa_cercanias_renfe_madrid.pdf
    • https://s3.amazonaws.com/nonabafat/25136019533.pdf
    • https://s3.amazonaws.com/zafaronivaj/29603794102.pdf
    • http://segimoto.myartsonline.com/basic_questions_and_answers_for_interview.pdf
    • https://s3.amazonaws.com/xarojapi/61138400657.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f433.bin
6fab506b29d83d86eb391758485f183abaaf5cd805570ab3e79e32f7768053b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF433 4840 bytes
font_01_sfnt_off0001048d.bin
3aee7bf9b8af37718299b1b4db8b948f9ef6a0930500adf3e7f6f98d322cb9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1048D 11564 bytes

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