Malicious PDF — malware analysis report

Static analysis result for SHA-256 c123ff00584246b2…

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 06:03:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 34f4245d65a68d3bbd6fe5c12c6b83a3 SHA-1: 7434ed757f549906a50aee785ad72447bc814c4b SHA-256: c123ff00584246b20a8fdfebe222a73501d82cd8a6c994025d3e2b25b97efa7d
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to an award, likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=2+nephi+9+30 PDF link annotation
    • http://zumepaposakuf.scienceontheweb.net/razes_do_brasil_srgio_buarque_de_holanda_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kazakilen/juieHje/95794418591.pdfIn PDF document text
    • http://repair-telefonov.ru/the_ordinary_skincare_guide_for_combination_skinsxeez.pdfIn PDF document text
    • http://strgb2.ru/97280414712h1li7.pdfIn PDF document text
    • http://salleapp.xyz/58024298272cat64.pdfIn PDF document text
    • http://pycnidwzxc.info/johnson_outboard_owners_manualgvrth.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/lizevitopetekoxikedi.pdfIn PDF document text
    • http://biotringel.shop/balance_sheet_in_business_casedmdzi.pdfIn PDF document text
    • http://lavkavkusa.store/zenanuladipisuloxokd338n.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/G49hgjb/44265057500.pdfIn PDF document text
    • http://imedo.ru/vogatolikununu69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/temple_run_brave_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/votive_candle_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/15713874354.pdfIn PDF document text
    • http://povovudajax.rf.gd/periodic_table_lesson_middle_school.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/pusimomerigotiju.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/ballade_pour_adeline_tabs.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_off0000ef45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF45 4888 bytes
SHA-256: 97f6700a882e8492bc2cab19c369f776f69392180e2298d11026d5e6fbe04ee5
font_01_sfnt_off0000ffec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEC 10544 bytes
SHA-256: ba4ceef176325ff12f3aa5ba3af101d78567bdee66bc3e90a573ccf3673fce18

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