Malicious PDF — malware analysis report

Static analysis result for SHA-256 24455061dbbdbb22…

MALICIOUS

PDF

78.2 KB Created: 2021-02-17 06:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 33b494274cfbb0cb5710bcc144f1aa33 SHA-1: 5454b05b8a12c7315ce00c7d0c32cfecbfdc3ade SHA-256: 24455061dbbdbb22e88c0d3b374671c5c1e81203d6dcd838a850c8b73e231551
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'bologen.ru', which is suspicious and likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'clinician's guide to teaching mindfulness'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=a+clinician%2527s+guide+to+teaching+mindfulness+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466140/normal_5fd2bfe4df120.pdfIn PDF document text
    • http://prizinsta24.online/65497396065a1ebe.pdfIn PDF document text
    • http://megalit-korolev.ru/geo_book3_laptop_review7tx8f.pdfIn PDF document text
    • http://smartycredit.info/django_website_templates_freek9qxb.pdfIn PDF document text
    • http://mebutef.22web.org/codewars_python_answer.pdfIn PDF document text
    • http://espaceclient-cmb.com/sogefunudopufole4m619.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388060/normal_5feda991dbe84.pdfIn PDF document text
    • http://yewes.space/bizet_carmen_intermezzo_sheet_musicx6khb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_6029e52e11c29.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/oculus_quest_adb_drivers3l4cu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://madojizekikozor.epizy.com/gat_subject_management_sciences_mcqs_with_answers.pdfIn PDF document text
    • http://xalolowoko.epizy.com/how_to_critique_rap_music_influence_modern_day_youth.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/94423859876.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/96889771153.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/kevovekapidema.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/conditional_sentences_exercises_with_answers_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/balkar_ankhila_de_new_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/38592745304.pdfIn PDF document text
    • http://bexadujozopu.epizy.com/72810783832.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/24904665408.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_off0000f298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF298 5496 bytes
SHA-256: 9881b796db0593c7616ce56a706a32186d6ab26cd5e308ed6cea09a03d6c4d6b
font_01_sfnt_off0001052c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052C 10432 bytes
SHA-256: 9aea2984de74f133bb1044b2b30afc7bc5edbca3023bf7bc5f480a7d78f3dcd6

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