Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec9749a4be80f00…

MALICIOUS

PDF

82.0 KB Created: 2021-03-12 11:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f51bd893e8fff123c849d2681e20219c SHA-1: 769f025fe2f7cc384098f9637120123f5acee42c SHA-256: 9ec9749a4be80f0022f21cda71288d7272e79efeaac9a2bd2c5dbc2968be5180
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical detection score. It contains an embedded URL pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to the Australian Open draw, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://baarspo.ru/award?keyword=australian+open+2020+draw+printable+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462376/normal_600db3e23ada6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5fc592567a091.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fed1e35b1e57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_602ebb107ce29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406466/normal_5ff6ae5a1a6ca.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/Fzghjb3/asus_zenfone_4_selfie_pro_android_9.pdfIn PDF document text
    • http://gufurebu.medianewsonline.com/fogavibiwikudazofoguvok.pdfIn PDF document text
    • https://cdn.sqhk.co/ditutafewaw/ejbhejc/54700424841.pdfIn PDF document text
    • https://cdn.sqhk.co/retirijozi/Ohf0Fgg/22725139712.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dac1bfad-2fe5-4dad-aea9-7f8ca30217ed/87425181752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766b314c-c4b1-42e7-b3a6-b4b3066fb5b6/how_long_is_navy_eod_dive_school.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/49969098587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/076e5996-362f-4e83-96af-59b18f8455cd/dr_terry_wahls_protocol_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/free_android_mobile_spy_software.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/breadman_bread_machine_manual_tr555.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63eff5b-3ce6-459e-8fda-3a52fa1acb05/yamaha_clavinova_digital_baby_grand_piano_cvp_600.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/lightly_row_clarinet_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/whatsapp_gb_anti_ban_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/686953fb-7cba-4589-9f85-01fcca8395e4/advanced_organic_chemistry_arun_bahl_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/tabla_periodica_de_los_elementos.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/how_to_enter_gerudo_town.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/94284323292.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/4203593135.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EC 5412 bytes
SHA-256: 284c79a3a47d95db23f1168b8e97c39987800160bfe8011b8a396277c396d60a
font_01_sfnt_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 10996 bytes
SHA-256: 005e438f8c678fe7993a5b64c2bafc026276a8d7c71d0acc131f9d0fbba4f0c0
font_02_sfnt_off00012c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C1B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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