Malicious PDF — malware analysis report

Static analysis result for SHA-256 261dd0ed53aab57b…

MALICIOUS

PDF

90.5 KB Created: 2021-03-30 07:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3d487e2373c249d1407c46f71eefa933 SHA-1: a8c4a4c407ff5b2d14d72c557efef66504de20e9 SHA-256: 261dd0ed53aab57bfe9b6ac43f1dc72bf001a20d20841b8eea4441a818b8266c
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, flagged by heuristics as a potential phishing or malicious content delivery vector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xajibur.ru/wix?keyword=this+thing+called+you+pdf PDF link annotation
    • http://resapus.scienceontheweb.net/basic_calculus_grade_11_learner_s_module.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/lupesotapisikukosor.pdfIn PDF document text
    • http://totipuzuforaz.mywebcommunity.org/blender_modeling_tutorial.pdfIn PDF document text
    • http://fowagovujag.22web.org/8510081279.pdfIn PDF document text
    • http://palamuduto.iblogger.org/wimikapafe.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/5783953507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fatavetotujel.onlinewebshop.net/american_english_file_starter_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4149b4b7-61cc-4888-b3c3-ffb36cc13ff6/stihl_chainsaw_ms250_chain_file_size.pdfIn PDF document text
    • http://kesajuwigiferu.epizy.com/free_education_template_powerpoint_2010.pdfIn PDF document text
    • http://pulitisagot.atwebpages.com/sunday_school_attendance_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/genirulujavobinulanorosi.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/contract_award_acceptance_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/irobot_roomba_i7.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/toro_super_blower_vac_51618_manual.pdfIn PDF document text
    • http://vamaloluriwax.epizy.com/guwexejetifukiwebe.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/bengali_movie_free_site_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ce5985-7b04-46f3-ba61-caab577334ec/kadorujel.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/leon_gordis_epidemiologia_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1145488b-7112-4fce-a913-a7d935ed8093/final_fantasy_tactics_the_war_of_the_lions_official_strategy_guide_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/juegos_olimpicos_hombres_y_mujeres.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/97863584618.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
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECB 5252 bytes
SHA-256: fb44d159d492d1293287197e1f866c3b5f2384457251f0bc26c987afb3749501
font_01_sfnt_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 8744 bytes
SHA-256: eb461c111c584ed0283fcc3a453a403258a1c570bd48c5aaf01a7e43c9763614
font_02_sfnt_off000111c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C4 11436 bytes
SHA-256: 823e4abe4360abdf6b0308d6b05af84d9fadeec08decab84849204cfac25b17c
font_03_sfnt_off000138ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138CA 16148 bytes
SHA-256: 9210f4d56a2d0e868c92c8f3d69665b65103c4cbe8eccb0746292756ebfacc8e
font_04_sfnt_off00014db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DB5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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