Malicious PDF — malware analysis report

Static analysis result for SHA-256 32587c273f8f1f09…

MALICIOUS

PDF

71.9 KB Created: 2021-03-26 10:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c1471cd098b4ee4a7940ba31ebfda1b SHA-1: b8bad985289c008d854cb72848f43aca8081e22e SHA-256: 32587c273f8f1f0955d7de965c09b0fd1dc85f91f80868fc14191d546e9eb34f
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, suggests a lure related to Dungeons & Dragons, likely intended to redirect the user to the malicious URL for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/strik?utm_term=dnd+5e+critical+hit+deck
    • http://biruweno.iblogger.org/why_wont_my_hp_printer_work_on_my_mac.pdf
    • https://cdn-cms.f-static.net/uploads/4383572/normal_603e78bc17cf9.pdf
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/fopelowesulom.pdf
    • https://cdn-cms.f-static.net/uploads/4420767/normal_60349e9c88d50.pdf
    • https://cdn-cms.f-static.net/uploads/4367922/normal_605a95af06354.pdf
    • https://puzifisabu.weebly.com/uploads/1/3/1/3/131378936/xotomas.pdf
    • https://static.s123-cdn-static.com/uploads/4491673/normal_5ff6c2e41765b.pdf
    • https://wisenuru.weebly.com/uploads/1/3/1/8/131856959/vasokawaki-libunariwam.pdf
    • http://giwitap.getenjoyment.net/cryptocurrency_guide_for_beginners.pdf
    • http://lakulikelanu.iblogger.org/punepenonoxadokakob.pdf
    • https://dijafujuzu.weebly.com/uploads/1/3/4/3/134369935/zusakojetuligu.pdf
    • http://tosanigepa.iblogger.org/ielts_practice_test_2_listening_answers.pdf
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/tixewifawivosaxitu.pdf
    • https://cdn-cms.f-static.net/uploads/4386613/normal_5fdae6778f4cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rigozapovi.epizy.com/23014392750.pdf
    • http://saxarivoje.onlinewebshop.net/74522696007.pdf
    • http://vulaxojanomu.rf.gd/10301215713.pdf
    • http://bidusibebawuz.onlinewebshop.net/lanilekodanutibope.pdf
    • http://pivujumurabaf.epizy.com/dar_la_bienvenida_en_ingles_formal.pdf
    • http://faxiruvud.myartsonline.com/why_isnt_my_aux_working_in_my_car.pdf
    • http://gixejemazob.myartsonline.com/35397656264.pdf
    • http://pupuwifemo.rf.gd/synonyms_and_antonyms_dictionary_free_download.pdf
    • http://ligiwekuxote.myartsonline.com/product_recall_procedure_template_uk.pdf
    • http://zewuxulaza.rf.gd/40722725680.pdf
    • http://gupepitasaxisal.epizy.com/limurelonegajafipufeko.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_off0000d96c.bin
631275d23ef5c0a8d15dce3b553ea614b520f7f2bba3833a965da90d2b05c433		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD96C 5036 bytes
font_01_sfnt_off0000ea8c.bin
b674754a75667f3f0c7a08fcf706b75c0c6f2ea30377840492c3f9ed5d04e4a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 11608 bytes

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