Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9c8d3c25c031bb…

MALICIOUS

PDF

78.8 KB Created: 2021-05-03 23:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4662499bbec05487779f598a620f19cc SHA-1: 9f819b09570dbaa289e55eeb29ce88110fe15763 SHA-256: fe9c8d3c25c031bb3c3517fc6a5779560249ba3c9bbbcf702fdc10355851d409
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, 'https://lozipotod.ru/strik?utm_term=jam+waterproof+speaker+review', is likely part of a phishing campaign designed to trick users into clicking it. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://lozipotod.ru/strik?utm_term=jam+waterproof+speaker+review PDF link annotation
    • https://cdn.sqhk.co/vadetegubufo/Bhhid7J/evowars._io_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/xWCRggD/behringer_x32_ipad_app.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/7mjaKdd/stickman_sniper_free_online_games.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/AgdQIhf/88091732753.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/hgijEhc/damoxozakofet.pdfIn PDF document text
    • http://walolexokesufa.sportsontheweb.net/navy_awards_in_order.pdfIn PDF document text
    • http://bivaxosufuxibo.mygamesonline.org/45357603881.pdfIn PDF document text
    • http://jipolavex.medianewsonline.com/44064029219.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/5c294d6d-6583-494e-bf0c-865f0e636117/honda_eu2000i_portable_generator_2000_w.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/beats_studio_3_review_cnet.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/72187034851.pdfIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_2b2d4fc7238f4003b602d3eba084e0cf.pdf?index=trueIn PDF document text
    • http://goxafebo.myartsonline.com/career_paths_tourism_express_publishing.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/flint_mi_water_quality_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/trend_micro_worry_free_business_security_s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed5d200e-ef89-43fb-9ab2-ad6afbbff8e8/sample_argumentative_essay_for_middle_school_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8579a4-2fce-4f5c-8bb2-d3128f76a6bc/cuisinart_ss-10c_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1401fa0-f4f5-4044-8f3f-66701e8266d2/lg_cassette_ac_error_code_list.pdfIn PDF document text
    • https://8641c524-1fb5-4292-87ed-dd72f64d6c22.filesusr.com/ugd/9b7d8a_43f815b0b35047b68dc8de454a52ae26.pdf?index=trueIn PDF document text
    • https://203e60c5-e32a-4587-ab6d-31d66de6d5b9.filesusr.com/ugd/014c36_dbf891d5b9324f97986e94442bfa2022.pdf?index=trueIn PDF document text
    • https://34a711a6-6b77-41b4-a6d5-f55437226814.filesusr.com/ugd/c1ce8b_7426629a8bba4437baf819e334c0a07d.pdf?index=trueIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_36ad572fa04b4fb99d5252b5c1347d6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/circle_of_life_choral_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/endocrine_system_worksheet_grade_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2edb12-e401-405f-a6c5-3da457c79a61/40980404447.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/47393192899.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/kedokonolidoda.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_off0000f57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57F 5220 bytes
SHA-256: 34670ca45a70918427006d07ff418a485bf530305e2d0ba8ede90d8dbfb33f62
font_01_sfnt_off00010749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10749 10788 bytes
SHA-256: a032b9b7bb14b236c5b526a993fe500fda8ea0a6be135c87cc9e1c1b2aa3fa53

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