Malicious PDF — malware analysis report

Static analysis result for SHA-256 24519da8bfa3212e…

MALICIOUS

PDF

69.8 KB Created: 2021-03-20 15:21:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 85f35939515c25e15b6c6df0b3ab2f34 SHA-1: 7d947c3af5f50ad6fe6f2da2602bb50f3c504fb0 SHA-256: 24519da8bfa3212e7c32bff8541982a414de12bf087df5ba092632d5ffd65bd9
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'zajinet.ru', which is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/strik?utm_term=a+father%2527s+story+lionel+dahmer+ebook PDF link annotation
    • http://tizezs.xyz/8392442978bhzyx.pdfIn PDF document text
    • http://izzzaaa.space/rinusemibusozurrtram.pdfIn PDF document text
    • http://pitushok.space/ascii_art_generator_free_full_versionjqwh8.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/31264585172.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/ganewemox.pdfIn PDF document text
    • http://irbestate.ru/how_to_open_lenovo_thinkcentre_m710qxs9j0.pdfIn PDF document text
    • http://devgm.design/newivadizobogfk6mt.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/niv_study_bible_large_print_imitation_leather_turquoise_caribbean_blue.pdfIn PDF document text
    • http://casser.xyz/mr_robot_full_free4vk04.pdfIn PDF document text
    • http://latencfsrt.space/descargar_wolf_simulator_para_pche0r2.pdfIn PDF document text
    • http://smartycredit.info/how_do_i_use_my_mac_computer_for_beginnersfaabw.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/safenalavojuwu/11427918140.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/21022343603.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/3d_maker_for_sketchup_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/pubg_lite_pc_without_emulator.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/18054159492.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/dozogiwivaxunulu.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/what_questions_to_ask_a_technical_recruiter.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/how_to_reset_a_linksys_wifi_extender_re7000.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/rogedilito.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/the_vampire_diaries_elena_and_damon_dance_feel_so_close_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/where_can_i_drop_off_goodwill_donations.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/womens_platform_puma_sneakers.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_off0000d519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD519 5476 bytes
SHA-256: 436dfa15b108439bc54357c9c6745fadd85d8f0875c985464e22e3e357ddc622
font_01_sfnt_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 9856 bytes
SHA-256: 17e1ef6193f2c93a06320b47f9ac551a750f5ba8a790532251eaaa0ed6d3a497

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