Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b6ec6d38182766…

MALICIOUS

PDF

70.4 KB Created: 2021-04-02 12:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f08c070858edad516bf1d758258eb699 SHA-1: 713a170f6b9e2a563f7a3a1a0bf147505e326d05 SHA-256: 66b6ec6d38182766f0c6063ab1862237b76a8ce77e41cd6478c070b8a6ecae77
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 0.9996

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://mezovuduw.ru/award?keyword=benim+hocam+video+ders+notu+pdf PDF link annotation
    • https://cdn.sqhk.co/sikereri/ehjhfhi/koan_sound_patreon.pdfIn PDF document text
    • http://nopezimugabotik.mygamesonline.org/nofivazodotazemamo.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/hefIeKI/maps_master_for_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/dclfHji/14923830010.pdfIn PDF document text
    • https://cdn.sqhk.co/futipujorup/pnw8rie/40658790858.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/4d59af3f-6631-4020-9c74-2143893ff757/what_is_the_best_book_on_day_trading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d85db2-6abc-4cad-a039-aba98a1534be/how_to_read_a_micro_sd_card_on_samsung_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c824059-3bbc-48d6-b29d-6b783c405e1c/how_do_i_identify_vintage_marbles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867830b5-8e56-4a62-9e73-b45ba589a028/deseravogetilireto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88dd0d1-1bdd-4c2e-9d42-b914f90b2bc2/sofuwara.pdfIn PDF document text
    • http://suruliloxapesas.myartsonline.com/antibiotics_drug_classification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45027e93-d73a-4259-87a6-dc49a63df357/vaxejinulapazejevorobem.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/listening_test_4_ielts_answers.pdfIn PDF document text
    • http://torejejowomu.myartsonline.com/john_deere_js30_carburetor_removal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8855a7e6-f439-4f08-af96-953bed2f0c34/beethoven_sonata_17_3rd_movement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f032038-0cfc-4810-87b3-5d4f1cbd11c2/how_to_draw_a_nose_for_beginners_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c322a383-ec81-45f8-8812-d9ac0e00379b/gramtica_bsica_del_espaol_con_ejercicios.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/gabulitejujos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0a3332-88ba-4fe3-8a19-a007d75c6c76/80869892043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79fd7f4a-7585-427b-8112-e4fe9469e515/the_secret_life_of_the_american_teenager_cast_season_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12966578-4832-40ae-b6fd-7800557938b3/what_size_case_fits_ipad_mini_5.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_off0000d725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 5472 bytes
SHA-256: 9967005ebfd016c1140f57203380a8ea46d95126a8245bcdeae7e0302cc2f811
font_01_sfnt_off0000e99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99F 10588 bytes
SHA-256: 4588720c72a62af3dd3b8970984b62867601bc003c3048531a59e07d8b83c456

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