Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eeb2b9f359741d8…

MALICIOUS

PDF

67.5 KB Created: 2021-03-16 10:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd3367b6c9fdb3ba3ee1f6ccff64c059 SHA-1: c768f73d2263a783da3845a3ec5e6ccd63279c1b SHA-256: 6eeb2b9f359741d8f68ee6fc94577b8c4ed2f0e75aa3aa03d19d274caacd2f55
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://dafemum.ru/wix?keyword=memphis+center+for+independent+living', which is a common tactic for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, likely as part of a spearphishing campaign.

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://dafemum.ru/wix?keyword=memphis+center+for+independent+living
    • http://narawodosure.medianewsonline.com/pdf_aristotle_nicomachean_ethics.pdf
    • http://nigavereke.mygamesonline.org/pdf_file_download_website.pdf
    • http://guketepudepi.iblogger.org/scary_stories_to_tell_in_the_dark_3_book_set.pdf
    • http://tusiteguluvora.getenjoyment.net/how_to_understand_others_point_of_view.pdf
    • http://foxilajat.sportsontheweb.net/wipituganuw.pdf
    • http://suzofovolavuk.scienceontheweb.net/cuadro_medico_asisa_almeria.pdf
    • http://jewagep.22web.org/topexin.pdf
    • http://jakusavu.sportsontheweb.net/how_to_trade_trends.pdf
    • http://vizenam.medianewsonline.com/school_the_story_of_american_public_education.pdf
    • http://pibimux.22web.org/sazogawitugizefekadu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gujutavevive/56090215837.pdf
    • http://mowesedapi.epizy.com/basketball_tryouts_flyer_template_free.pdf
    • http://kapixij.epizy.com/california_driver_s_permit_test_answers.pdf
    • https://s3.amazonaws.com/watajive/fegukunomasebu.pdf
    • https://s3.amazonaws.com/zibenoroduzuw/studio_ghibli_sheet_music_free.pdf
    • http://radawewivilu.epizy.com/bisakoxebeviduz.pdf
    • https://s3.amazonaws.com/tixedujegibex/8352598291.pdf
    • http://mivuturirem.rf.gd/algebraic_expressions_worksheet_year_8.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_off0000c9b2.bin
645753f1f58fb659b41486c21ce1bc0917699c5519d2e6acca12f30f7a2c576d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B2 5424 bytes
font_01_sfnt_off0000dc16.bin
551b8695a2193b4d45f145b645a9abf28d7c9f7e409f9d8bc0070ed1052fbea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC16 10672 bytes

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