Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4dcc73386299c5f…

MALICIOUS

PDF

84.6 KB Created: 2021-04-11 16:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dd316faf3b1e6e76ce6591474b871630 SHA-1: 74a6af307efe8eeee9d4156561793a6e669782f5 SHA-256: a4dcc73386299c5f4d14655debbda3eca4e719054de310b397cdf836db7168c3
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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+much+did+fifty+shades+of+grey+book+make PDF link annotation
    • http://detonic-official.website/sucedio_en_manhattan_pelicula_complejmba6.pdfIn PDF document text
    • http://vir-tus.com/whered_you_go_bernadette_nytimes_reviewgwnxr.pdfIn PDF document text
    • https://cdn.sqhk.co/safajoju/whhdyTM/marhaba_auto_auction_admin.pdfIn PDF document text
    • http://bet-info.ru/lodumoluridikegadajif97h9.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/5uiQic7/nativity_of_jesus_christ_script.pdfIn PDF document text
    • http://zuxekagapefe.mygamesonline.org/kenuwabupiradetejisobigix.pdfIn PDF document text
    • http://sovetnik53.ru/pippi_longstocking_originuzuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/kogoruzojif/hh5UheS/27780706459.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/hSjhZIv/specialty_cakes_in_memphis_tn.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/ia4gdge/natororerodezisaxuz.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/vosimalume/how_do_i_install_google_play_on_my_amazon_fire_tablet_5th_generation.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/telof.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/bach_minuet_in_g_major.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/rawunolabutapaja.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/geronimo_stilton_heromice_books_list.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/jonozozatokewezemovaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/xudelinanelikinugazupa.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/tacitus_annals_latin.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/customer_feedback_report_meaning.pdfIn PDF document text
    • http://xemunebo.atwebpages.com/verizon_quantum_gateway_firmware_update.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/georges_secret_key_to_the_universe_chapter_17.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_off00010bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB5 5760 bytes
SHA-256: da65140e21f827cfdd0166714ccf992d2ad718ecad17eb3a97afb2bfeab5c73f
font_01_sfnt_off00011f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F42 11120 bytes
SHA-256: 478bdc690783786dc66028367cc06fee5dc81a6318099e71cf3f61e3718ab9e3

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