Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e029912c37d34fe…

MALICIOUS

PDF

80.6 KB Created: 2021-04-28 19:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8b52769b7f0bb789d3d58e97c23bd1a6 SHA-1: af01ae24f8fdebf7a3f625cf270fbefb10689830 SHA-256: 5e029912c37d34febeefdd0aa7be446caed04a283f21e58e7f128445a79ab89c
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs, 'https://jottigo.ru/strik?utm_term=power+book+2+episode+110+cast', appears to be a lure, possibly related to popular media to entice clicks. The presence of numerous external links, including 'http://xogunajeraxuda.mywebcommunity.org/nupofufibolibavajuwus.pdf', suggests an attempt to direct users to potentially malicious or controlled web content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/strik?utm_term=power+book+2+episode+110+cast PDF link annotation
    • http://xogunajeraxuda.mywebcommunity.org/nupofufibolibavajuwus.pdfIn PDF document text
    • https://cdn.sqhk.co/gimanoretev/jjjjggi/3972117420.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/measurement_assessment_and_evaluation.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/which_is_more_important_sun_moon_or_rising_sign.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/cjfjhhd/descargar_waterpark_slide._io.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/niwotipugonuvoz/evaluative_reading_comprehension.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/34407797153.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/nervous_system_quizzes_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b43320-8bfb-4bed-accf-4423d92fb20b/south_love_story_movies_2019_list.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/zetesa.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/elemental_impurities_risk_assessment_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/formao_barbeiro_aveiro.pdfIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/aso_admissional.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/trumpet_free_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161ecead-7f4a-4919-9c29-61feb6ced61a/87982692232.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/nys_cdl_road_test_point_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea90dc2-e30a-4576-b1bc-acc0375263fb/42570844102.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_6afdbdc412054ed09e34e124057062b7.pdf?index=trueIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_b22ab5ea6c734755920c0d4c4230901f.pdf?index=trueIn 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_off0000fc1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1B 5660 bytes
SHA-256: b00b01922d0a86a513dde657e306d41a380b041410b73e6e1b9d3f4e11e623ac
font_01_sfnt_off00010f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F84 11144 bytes
SHA-256: e186d66e8a3ed5720f1f6ec72e3fae7b4b6ea8f0d7f676fd79139c203c70cdb3

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