Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c4407075fdd9b1…

MALICIOUS

PDF

89.4 KB Created: 2021-03-11 19:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7785083f79874f7b24397c072e0439c SHA-1: 75139614a203f08cedb0c7adea401930cfb8cbeb SHA-256: 29c4407075fdd9b1278522c3978d94d8a65053c217231ab5d318a13c973e3149
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL designed to trick users into downloading further malicious content, masquerading as a search result for a technical book. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://ponafet.ru/award?keyword=basic+electrical+engineering+book+pdf+in+tamil
    • http://xtina.online/capital_marx_audiobookeu36s.pdf
    • http://creamwalls.online/gupuzonepuomed0.pdf
    • https://static.s123-cdn-static.com/uploads/4409256/normal_5fdd6d6514ac0.pdf
    • https://cdn-cms.f-static.net/uploads/4473023/normal_5fda306370e42.pdf
    • https://static.s123-cdn-static.com/uploads/4455196/normal_5fc6d91cbaf72.pdf
    • https://cdn-cms.f-static.net/uploads/4383571/normal_60275b90050bf.pdf
    • http://tricitysikhs.com/stories_to_read_your_unborn_babyg7qz8.pdf
    • http://ejinaya.com/jovipuzanojirifukegesizoej8ji.pdf
    • http://ru-payment.casa/obtain_police_reports2n0o.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/6a4bfd80-583e-4652-ab5f-9e37b8c5634f/biblia_de_estudio_arcoiris_reina_valera_1960_gratis.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/good_offline_navigation_app_for_android.pdf
    • https://uploads.strikinglycdn.com/files/44a2c123-e62b-458d-b4cd-393be4204146/komimavota.pdf
    • https://uploads.strikinglycdn.com/files/0071fd32-0865-4371-bedd-356b79fcd6b1/lifizuxixokibefor.pdf
    • https://uploads.strikinglycdn.com/files/c2fc662e-78f4-44af-af70-d922e021b149/fabamunuzanamel.pdf
    • https://s3.amazonaws.com/wemazun/chigurida_kanasu_kannada_movie_song_free.pdf
    • https://uploads.strikinglycdn.com/files/bcb22086-e247-467d-a070-ad34f04515ec/95088735535.pdf
    • https://uploads.strikinglycdn.com/files/248558b7-caf1-45b6-b7d7-b57714a27eda/the_jordan_rules_book_barnes_and_noble.pdf
    • https://s3.amazonaws.com/difigomisosak/41140039640.pdf
    • https://uploads.strikinglycdn.com/files/84524b3f-c5a1-4ed6-89b4-ce1f3b6fcb09/how_to_lose.weight_walking.pdf
    • https://s3.amazonaws.com/bulikowexunepov/best_book_to_eat_healthy_and_lose_weight.pdf
    • https://uploads.strikinglycdn.com/files/824d6969-8e06-401c-ab7f-662ac2911cc3/digixoka.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_off0001113e.bin
1ac38b6bfacb491f9fb1ade1fad904c869dfeec1e096c898889f66be719ec5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1113E 5516 bytes
font_01_sfnt_off000123d7.bin
bd8019984a2e9a3e96231e0ded439d64fdb94f4529aabda6d1f983213381fb06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123D7 11204 bytes
font_02_sfnt_off000149d3.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149D3 4324 bytes

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