Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4d8a4b37addb80…

MALICIOUS

PDF

76.6 KB Created: 2021-03-22 07:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2f86dbcb6201d98499aff2e19698a28c SHA-1: 722a0e98953caea29c2ebaa6d51be8ffb53d9c5c SHA-256: 7d4d8a4b37addb80cd189c26b88237c1a82ed65f437cf91964c8905658cfde76
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ClamAV signature and an ML classifier. It contains an embedded URI pointing to 'https://xezojetit.ru/strik?utm_term=how+to+reset+jbl+flip+3+speaker', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, suggests a lure related to resetting a JBL speaker. No scripts were extracted, but the presence of external URIs and the malicious classification strongly indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=how+to+reset+jbl+flip+3+speaker PDF link annotation
    • http://brettlockhart.com/pomepozalinuyb2k4.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/todutogum3d10.pdfIn PDF document text
    • http://mkr-olimp.info/29120996582c7wzq.pdfIn PDF document text
    • http://sell-toclick.online/yeh_shen_sootface8uk5t.pdfIn PDF document text
    • http://xufuzema.sportsontheweb.net/zakarova.pdfIn PDF document text
    • http://boothattendant.com/mazumijidpo4g.pdfIn PDF document text
    • http://lixanijet.iblogger.org/environmental_science_technology_author_guidelines.pdfIn PDF document text
    • http://vekvelo.ru/water_ridge_faucet_costco_model_numbervlkr5.pdfIn PDF document text
    • http://lesantyqas.online/3906596224idef5.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/fisiopatologia_del_absceso_hepatico.pdfIn PDF document text
    • http://pankreatitum.ru/19106882762l34hv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jazupizewatabal.epizy.com/blade_350_qx_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/83660805462.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/36849711563.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/how_to_use_prayer_beads_pagan.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/mako_unicompartmental_knee_arthroplasty_technique_guide.pdfIn PDF document text
    • http://puzawibopuxeluv.epizy.com/56515007435.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bareilly_ki_barfi_movie_free_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/myron_mixon_rib_sauce.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/sokukavurozeleg.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/66958026232.pdfIn PDF document text
    • http://molezadidusoser.rf.gd/22715477707.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/agile_project_management_books.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/tefaniloroxalezin.pdfIn PDF document text
    • http://mologesasik.epizy.com/jack_reacher_series_book_4.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_off0000ed45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 5392 bytes
SHA-256: e6f9892e59b788f0618e24b65f87d36559f122d3b68e5b36f69d1f9cf50fba0f
font_01_sfnt_off0000ffb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB6 10988 bytes
SHA-256: 92d49eb342f8518271d85b02b7a608ca66f22a9ccb0eb444d9ae081e357b563c

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