Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee9271b4e4a218a…

MALICIOUS

PDF

85.4 KB Created: 2021-03-20 04:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98dec955487555b9a819f36256bdd034 SHA-1: 70b5a9c79bcf4b51496caa2efb5c4bc5e79cf40b SHA-256: 0ee9271b4e4a218a1a6862ece29a7ca4dda413af487f591261868a3b745f813a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering a firmware update for a Yamaha RX-V673. This is a common phishing lure to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF_URI heuristic confirms the presence of a suspicious external link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=yamaha+rx-v673+firmware+1.80
    • https://cdn.sqhk.co/mekurapiw/iigjhfs/93643525490.pdf
    • https://cdn.sqhk.co/mujawiru/jeD9hhi/fuwilixekoxilumer.pdf
    • http://lupupive.22web.org/dofugugalipunisegimeg.pdf
    • http://bemijaragilez.22web.org/kekasazorupirot.pdf
    • https://cdn.sqhk.co/rajexizeba/0Yibgtc/pifubiduwewu.pdf
    • https://cdn.sqhk.co/vimewiki/ijiDAyB/39238645810.pdf
    • https://cdn.sqhk.co/mekurapiw/1ic0lkT/bokezafaru.pdf
    • http://pamatidela.getenjoyment.net/jatitepaw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lejivugeleguwod/51037997803.pdf
    • http://dawejur.atwebpages.com/business_intelligence_tools_and_techniques.pdf
    • http://kagilabitivibe.epizy.com/labantwana_ba_wrong_song.pdf
    • http://fejusudoboriduf.rf.gd/fitt_guidelines_for_cardiorespiratory_fitness.pdf
    • http://lilepav.rf.gd/xanekizojubipagen.pdf
    • http://zarevamemamafo.rf.gd/brown_s_nautical_almanac_download.pdf
    • https://s3.amazonaws.com/waxapoz/pearson_mymathlab_homework_answers.pdf
    • https://s3.amazonaws.com/lizuseguwix/55309404158.pdf
    • http://xafafomuripag.epizy.com/lokisekojuval.pdf
    • https://s3.amazonaws.com/kavugusepe/41013520065.pdf
    • https://s3.amazonaws.com/xufoxorog/latitude_e5400_spec_sheet.pdf
    • http://vefapiba.epizy.com/wajadebakosuvafotun.pdf
    • http://mazavenekixibu.rf.gd/50230974979.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faa6.bin
f9b7333c6fec865a8d99b6aa8828c738d94c79003ee59609ac982305f0a255b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA6 4028 bytes
font_01_sfnt_off000108c2.bin
541fca6922269c06bd480cc2e36bc435b5539ee83b2f2fe486246d080d2a94c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108C2 5828 bytes
font_02_sfnt_off00011ca4.bin
2de7351ad57bc58b993e1e8ce27fda60070e69124e94aa52797883c157d86cde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA4 13124 bytes

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