Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d3f0638d36fc32…

MALICIOUS

PDF

72.4 KB Created: 2021-03-25 12:22:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76cae52f2b98ebfdf8e7343a55cb7953 SHA-1: d55150bd19eb2ab25d4e4ba567e71b8741bcdf09 SHA-256: c2d3f0638d36fc32d6bb412d023e317098c14798a88a763847c29c76d897ce77
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, identified as a phishing lure related to printer maintenance. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://ponafet.ru/aws?utm_term=brother+hl-l2370dw+replace+drum+message
    • http://thecabinets.xyz/ala_baburao_marathi_video_song0dmov.pdf
    • http://kijekidajefi.getenjoyment.net/visorik.pdf
    • http://bolipoloweda.mygamesonline.org/baldassare_castiglione_book_of_the_courtier.pdf
    • http://luminar4-download.xyz/wawomipavupizetemitelexu7e6w2.pdf
    • http://kirudikegopoded.sportsontheweb.net/40627146687.pdf
    • http://wuxetij.mypressonline.com/67827410738.pdf
    • http://xeniveperovabef.sportsontheweb.net/arnold_ehret_english.pdf
    • http://tifusavegapawuf.mygamesonline.org/importance_of_cation_exchange_capacity.pdf
    • http://kavelizopepi.mywebcommunity.org/blades_in_the_dark_free_play.pdf
    • http://zabemaladameg.medianewsonline.com/pdf_to_word_converter_online_free_without_email_id.pdf
    • http://byt-upak.ru/how_does_food_cooked_in_an_air_fryer_tastermixf.pdf
    • http://wosetulalenut.iblogger.org/lokupavoduwabasazatimegoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/77852252-b6bd-4aad-a4bd-1a419925b67c/kutapixiwewitobatafoj.pdf
    • http://bifovigavij.myartsonline.com/pewulumugabokapaga.pdf
    • https://uploads.strikinglycdn.com/files/34a862c5-dd40-43c4-ac74-c3312739601a/the_stand_2020_new_ending.pdf
    • http://mimiwuzoxul.epizy.com/asura_s_wrath_pc_ocean_of_games.pdf
    • https://uploads.strikinglycdn.com/files/69b2ceb1-b975-42d0-8117-d98546accc62/24999658330.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_off0000dbeb.bin
50ebe208ed2f2a839d7cc4b3a229b2ec353380bf8184efc41ca145035447f308		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEB 6180 bytes
font_01_sfnt_off0000f0e3.bin
b03d1f37dd793fab5e73a37ba66ae4bec65e0de8725adc18fddb638e01d94579		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E3 10472 bytes

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