Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47e9c73db65452b…

MALICIOUS

PDF

89.8 KB Created: 2021-03-01 06:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b943afeffa10694be7f4cc3d9a1a5430 SHA-1: 5108d0c275c6ca262f90bbf370762e4ba2dcba1a SHA-256: e47e9c73db65452b73353e7a77e1ee8cbbc6dc76c5375ebfe92100513327905f
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 URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to be related to search result content, suggesting a phishing or malware delivery lure. The presence of multiple unknown reputation URLs further supports the malicious intent.

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://vilenefex.ru/123?utm_term=star+trek+discovery+season+3+episode+12+cast+2
    • https://cdn.sqhk.co/vetelojid/jdgdiax/94192863324.pdf
    • http://kkkirrreeee.space/r52mx.pdf
    • https://cdn.sqhk.co/nowovadizeb/U3thbjh/54769466060.pdf
    • http://pupofikavize.iblogger.org/microwave_diathermy.pdf
    • https://cdn.sqhk.co/fipuwemupe/jjhgFJI/learning_android_development_with_kotlin.pdf
    • http://mojizeki.22web.org/cat_in_the_hat_cartoon_cast.pdf
    • http://reduslim-italiaoficial.site/gujasibopozefojy0coa.pdf
    • https://cdn.sqhk.co/nakunadubux/aifujgh/wojna_polsko_bolszewicka_notatka_w_punktach.pdf
    • https://cdn.sqhk.co/bimeniwog/gemHBmz/dupejedewe.pdf
    • http://lynciguest.com/nedulajuou4.pdf
    • https://cdn.sqhk.co/nexasolonit/cjdjjji/lithium_18650_flat_top_rechargeable_batteries.pdf
    • https://cdn.sqhk.co/konidadelan/jhPmhhn/yoda_dark_side_cave_quote.pdf
    • http://iranianvc.com/9475580513orngo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zekakodususebu.epizy.com/best_android_phone_with_bokeh_effect.pdf
    • http://numubujekan.rf.gd/netflix_pc_location.pdf
    • http://gezujoju.epizy.com/navotekisobagep.pdf
    • http://nuxizutize.rf.gd/best_fiberglass_entry_doors_consumer_reports.pdf
    • http://zomijoler.epizy.com/how_to_replace_an_old_honeywell_thermostat.pdf
    • http://bidexegope.epizy.com/19117647539.pdf
    • http://sudimotidib.epizy.com/reasons_to_stay_alive_matt_haig_free.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_off0001217f.bin
210d6e5bb3059b4b4819cb6cb8b30813499a97fc18a3c95afe75d98a7b8460ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1217F 5712 bytes
font_01_sfnt_off00013515.bin
620cf99791e06e71030c9ad2862cb918607b59b2691c84279faed520489b11ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13515 10592 bytes

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