Malicious PDF — malware analysis report

Static analysis result for SHA-256 c487657ff43ef08b…

MALICIOUS

PDF

74.8 KB Created: 2021-03-09 01:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e61a0650809446dff66f5ee3a11ccce6 SHA-1: 9f868c7419ba79f53866613c77d35a53215703f6 SHA-256: c487657ff43ef08b01b271db21497d6d76942a21c1b134ae9fff95ce7234dafe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/123?utm_term=english+grammar+articles+printable+worksheets PDF link annotation
    • http://vogudikomi.getenjoyment.net/gypsy_woman_aadhi_guitar_chords.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/brother_hl-5250dn_drum_light_flashing.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/49539346240.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488092/normal_5ff32d70029ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449170/normal_5fd0aabad662a.pdfIn PDF document text
    • http://rolivazugatar.scienceontheweb.net/73197262893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389107/normal_6029c3abcef1c.pdfIn PDF document text
    • http://sufawevugut.mywebcommunity.org/rewabo.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/bubisifapagefe/mafowodowimavoletu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b5cc2b-5710-4de6-894d-30646e021e4f/guwadegadebagilanevijez.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/29310032299.pdfIn PDF document text
    • http://fabedidatifi.onlinewebshop.net/how_to_program_a_radio_shack_pro_2052_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8de464bb-0825-4fb3-8133-07009ee13ec9/harry_potter_and_the_sorcerers_stone_back_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/55588018644.pdfIn PDF document text
    • http://dupetomumipur.rf.gd/next_mens_nightwear_size_guide.pdfIn PDF document text
    • http://pekanob.rf.gd/electron_configuration_level_2_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41b2ed4e-0ea3-425a-92cd-b4d7727bc326/78255248946.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/jexoraroluzeruwumigujad.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/radix.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/sat_writing_practice_test_2_answers.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_off0000e630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE630 5600 bytes
SHA-256: a5e7424bd7579213c9b1dbc5e45a0938dc7a1509c61231797a240397bb15856d
font_01_sfnt_off0000f928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF928 10756 bytes
SHA-256: 6b5d59f80745eb24c7919ba9945915d03038a4a295e97931eca02792f2389ee5

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