Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8682025d2996ca…

MALICIOUS

PDF

78.9 KB Created: 2021-04-08 05:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b1d9939705d13954ef7fa87bb36ce4c6 SHA-1: b5367fe805df780fa3f39c6ad942e6e18afb2323 SHA-256: 6a8682025d2996ca3d72f16b18c00ec1ba7b741dd342a8d2e09c79c3ab5b9d1e
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 flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to reference software, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/123?utm_term=canon+cd+label+printer+software PDF link annotation
    • https://cdn.sqhk.co/vagewovupug/hjhLjgO/best_weather_apps_for_android_home_screen.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxunoromi/jvNhajg/10450567812.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/hhja5d5/lost_river_cave_bowling_green_ky_weddings.pdfIn PDF document text
    • https://cdn.sqhk.co/ladesajisama/dhehanv/fax_transmittal_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/nowegizin/ge9VThg/bootstrap_4_glyphicons_cheat_sheet.pdfIn PDF document text
    • http://viziziziv.mywebcommunity.org/94363144334.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/36897461893.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/j0xggLS/general_hospital_today_s_full_episode.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/2ighghb/55794351244.pdfIn PDF document text
    • https://cdn.sqhk.co/bafebolabefo/QbvhbLs/dajepazoxebidopavuwo.pdfIn PDF document text
    • http://rolorutebu.sportsontheweb.net/zebelovuporal.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/3jfjq5v/true_caller_app_new_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/29971754776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5571749c-f54d-4087-97a0-e7581d36e764/ccna_for_dummies_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/mukadosagadasomadan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae70f4c7-767c-4338-9776-acbfb9760f13/sat_test_prep_math_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc4039c-0851-479a-b4c7-5fcb7be98077/the_quran_interpreted_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/denon_dp-300f_cartridge_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/70068280583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f252c41-4666-43b7-990e-325369acedee/kawugurupozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7e54c0d-3778-42b7-a168-77b6b0b56ee2/lyrics_to_7_years_old_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/18922093298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318ef8a9-e1e5-45ad-a1c8-748aac811f12/kopumedamapoxodovar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c29bb6-e6fa-4b8f-a46b-32235d06a451/11001810292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95fa5550-7845-493f-9786-26da88d25f22/74624912566.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_off0000f637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF637 5284 bytes
SHA-256: 5bfde7b66150898e300c92627dd99fe47833a8955391806864e3763e44cf82b9
font_01_sfnt_off00010848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10848 10888 bytes
SHA-256: 73f665ffa670b72e194b3a7b9916b20acaedc0274a749bf1ab2c21077e531a82

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