Malicious PDF — malware analysis report

Static analysis result for SHA-256 19cd71ac6883bee9…

MALICIOUS

PDF

74.8 KB Created: 2021-04-18 10:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2105f26993b91c7f62b551f82e71ee25 SHA-1: 2a918cbb1fd83f10ac86760a164567bb25c2b5b6 SHA-256: 19cd71ac6883bee917ea31349ddf01de06d40a067919534856b6d3dd8d2c11a5
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 suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

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://xezojetit.ru/strik?utm_term=britax+car+seat+base+installation
    • https://cdn-cms.f-static.net/uploads/4366375/normal_604fb989bda2e.pdf
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd64b0da1ed2.pdf
    • https://static.s123-cdn-static.com/uploads/4451206/normal_5ff99616bca97.pdf
    • http://tufodudem.mypressonline.com/acuerdo_de_paris_chile.pdf
    • http://varesazu.22web.org/why_my_dehumidifier_is_not_collecting_water.pdf
    • https://cdn.sqhk.co/lanumakefu/hgu1hiO/vejizodojajepa.pdf
    • http://ladekepevij.mygamesonline.org/bioenergetics_summary.pdf
    • https://cdn.sqhk.co/nobixapo/Uaw50jd/alphazero_chess_games_pgn_download.pdf
    • http://ropisunofo.mygamesonline.org/bikram_poses.pdf
    • http://mumiwimag.iblogger.org/best_bloatware_remover_android_root.pdf
    • https://cdn-cms.f-static.net/uploads/4410004/normal_6043fb8549968.pdf
    • https://cdn-cms.f-static.net/uploads/4372378/normal_605acd9267997.pdf
    • https://cdn-cms.f-static.net/uploads/4412583/normal_601caf2cb0490.pdf
    • https://cdn.sqhk.co/nubavojek/haijkjc/5942642988.pdf
    • https://cdn-cms.f-static.net/uploads/4458389/normal_6048704549abd.pdf
    • https://cdn.sqhk.co/dukosisevu/hbbsieN/pesujazofezizowodigaxiwi.pdf
    • https://cdn.sqhk.co/gujowaxexag/SPjaihf/high_jump_dieppe.pdf
    • http://gedawuxofawu.iblogger.org/gawerovedokow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fuginifetulad.epizy.com/green_lantern_comics_free_download.pdf
    • http://nuziwaji.epizy.com/bhagavad_gita_book_in_gujarati_free_download.pdf
    • http://kusababi.onlinewebshop.net/pomezixonuz.pdf
    • http://vupumexaridajiz.epizy.com/interview_conversation.pdf
    • http://kaberitate.rf.gd/maximum_principal_stress_theory_of_failure.pdf
    • http://jefelaxe.epizy.com/23730490872.pdf
    • http://gaxugozoj.epizy.com/essential_knots_to_know.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_off0000e77c.bin
0d52ba89fc47a7ae62e0c6694d8453d41b3e86334364a3a6990c16f52a0fc6ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE77C 5048 bytes
font_01_sfnt_off0000f8b5.bin
5113943285d8efa5d6093e2002b5ea8039958d3780b001d10c1a2c5c098fa6b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B5 10964 bytes

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