Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b45d8d1e7ae32f9…

MALICIOUS

PDF

80.9 KB Created: 2021-03-24 10:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2f07785f2e67be82073907fdcadcd2f SHA-1: be6836adbaa410177fe7b0fa5684695b141cd309 SHA-256: 2b45d8d1e7ae32f98d282adcf883651ebceea7bb8738923e591e6ace8c4f3e28
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=kashmir+gold+granite+with+white+cabinets
    • http://jadebey-x.com/restaurant_operations_manager_job_duties6dkeh.pdf
    • http://sacredname.ru/how_to_get_revelation_lore_bookva26z.pdf
    • http://dommasters.site/axler_measure_theory_solutionsbpewe.pdf
    • http://quickpapp.online/unidades_de_masa_del_sistema_ingles_y_sus_equivalenciasl1fuf.pdf
    • http://espaceabone.com/fagusibow93fl5.pdf
    • http://youralteragoods.com/3523846713jxiuw.pdf
    • http://activa-fb.com/bimogubagujcxlz8.pdf
    • http://raffle.website/143882719231upxg.pdf
    • http://itabody.space/bhangra_empire_fall_2017_dance_offtd909.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gixawetopoli/change_label_template_existing_word_document.pdf
    • https://s3.amazonaws.com/bifamomove/tenekazeva.pdf
    • https://uploads.strikinglycdn.com/files/f2540f99-1f43-4f6a-96c3-9a62bf69d98b/how_to_adjust_volume_on_tv_without_remote.pdf
    • https://uploads.strikinglycdn.com/files/a4296c39-a90c-4920-bf5e-dab9224a0e96/is_dyson_having_black_friday_sales.pdf
    • https://uploads.strikinglycdn.com/files/c9aa5a9e-93f4-4f3e-8bea-46780963be0f/nco_history_board_questions.pdf
    • https://uploads.strikinglycdn.com/files/ebe7b982-349d-40dc-afca-f9f18b2032e6/how_to_insert_a_sim_card_into_a_lg_phone.pdf
    • https://s3.amazonaws.com/lorugipopuxe/17886214981.pdf
    • https://uploads.strikinglycdn.com/files/cb8870dd-8c13-4ba9-8429-873076bc69e9/how_do_i_fix_the_code_on_my_kenmore_washer.pdf
    • https://uploads.strikinglycdn.com/files/4d518516-70d9-4368-9517-c024b86a12e1/dell_optiplex_3010_memory_upgrade.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffb7.bin
8149d5c3901a7709b4cec902fa4b8b7f1a63f83c5da31719a04b295059ef217f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB7 5552 bytes
font_01_sfnt_off00011284.bin
8852e99a46699e6b17c8bdfbc96e32bef451005b73285ff31cf137fa63fb81a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 10504 bytes