Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ecf3a443289e7a…

MALICIOUS

PDF

69.3 KB Created: 2021-03-21 12:22:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 23fa6b2ff1d0fdbb046cfe3cdc4b436b SHA-1: 2370f25ea5d60e8153910a3ee1fd337c1f545c56 SHA-256: e7ecf3a443289e7a518232780926f76e5d865917f4bba14d15373119f3395016
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of an external URL suggests a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=bob+revolution+flex+duallie+jogging+stroller PDF link annotation
    • https://cdn.sqhk.co/xadowififux/Ghhiche/lezim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488314/normal_6042ca18c776e.pdfIn PDF document text
    • https://cdn.sqhk.co/kowaziwaso/hcFzwhb/87019301861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_603e266b65fb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489588/normal_5feb9b124e55e.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/Ga0ibif/66051394627.pdfIn PDF document text
    • http://vadosixajobirug.mygamesonline.org/tejisifujobagemimidadi.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/jjhgUGy/83663030395.pdfIn PDF document text
    • http://xijivedijimidip.mygamesonline.org/bipasorenapekibabel.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxomawelej/Fjbvjbm/neron.pdfIn PDF document text
    • https://cdn.sqhk.co/woluzadeviv/Ciz3idF/toturagixixilidi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463830/normal_5fe3afb18c2c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/176609d1-cddb-40a3-bac4-0803681442b3/runuxodawibon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91742ffa-4bc6-479a-a56f-ebf506a0de36/influence_science_and_practice_audiobook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4030dc00-d763-488f-adf0-6de5a4099f55/el_inversor_inteligente_benjamin_graham_comprar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12eec6b9-022d-4c87-a6ff-7e2f6b574066/genie_2028_red_light_blinking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc6eeec-b01f-4368-9849-33d6d7663864/dyson_cinetic_big_ball_animal_allergy_upright_vacuum_nickel_refurbished.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/add23015-8975-42ef-8ca8-3a6d51a0fb8c/saragadezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4444e66-227d-4250-8add-e33d041c6816/bhagavad_gita_chapter_12_meaning_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/194e7580-eb07-4d1e-904e-f537b15bca2e/35354216489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37edb277-8dff-4f9a-a4a6-9cf4e612eed1/dungeon_and_dragons_rule_books.pdfIn PDF document text
    • http://zizenatoxu.myartsonline.com/how_to_draw_a_brain_in_easy_method.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af900c4-e5d9-461e-847f-637725f76676/can_you_keep_a_secret_movie_soundtrack.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFED 5468 bytes
SHA-256: a0acb70de351565d0571c276411161f4760d85801e6e7cbbddcc9303aff01f10
font_01_sfnt_off0000e2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A3 10320 bytes
SHA-256: 7bf43e58fdad1885feb404a4c9f9602a15d189c81051e42a3b6c264fcbe7ed5c

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