Malicious PDF — malware analysis report

Static analysis result for SHA-256 b190f32b911cc75e…

MALICIOUS

PDF

72.5 KB Created: 2021-06-10 17:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7dce927612662de78c3eeb7586a95b40 SHA-1: d77e89cdcf871145669017c4852b775031769c47 SHA-256: b190f32b911cc75efd1d7747f916c99a7609669e28fe0e75837a936ae7802d56
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pistant.ru/pbw?utm_term=reading+comprehension+passages+for+grade+8 PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4488092/normal_60afff12bc9be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459175/normal_5fe0464929956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463533/normal_603cb20cb98cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497688/normal_60300350efc74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_6020a129d082e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5fe9941746ea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483864/normal_603ea38428749.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4375517/normal_60b0719d771bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/da7413c1-dc05-4bff-b180-8c8de63cdc7f/c_snake_game_source_code.pdfIn PDF document text
    • http://kivotin.pbworks.com/f/54052941810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37553b60-9b8e-4d34-88c9-8a646c279de4/life_is_life_song_meaning.pdfIn PDF document text
    • http://febamizilaw.pbworks.com/w/file/fetch/144601905/the_true_story_of_the_three_little_pigs_lesson_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5986c86a-6c64-4206-a1ac-7aa52fdb44f5/magudolotaboluz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aca046dd-a842-4cd8-a4c2-09b5e0d1e27a/la_biblia_catolica_de_america.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85219516-1b12-48d6-9fd1-dbbafb42289f/the_tale_of_peter_rabbit_and_benjamin_bunny_1993_uk_vhs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f7cd389-7035-47ef-a84e-a411ab13b4b1/att_1040_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6ead8fe-6864-4053-a2ca-af54bc361421/python_3_pandas_tutorial.pdfIn PDF document text
    • http://zuwofig.pbworks.com/f/how_to_give_interview_for_pre_primary_teacher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce87add4-d66d-4766-8aa6-d2a51fd555d1/dyson_dc44_animal_cordless_vacuum_cleaner_review.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_off0000dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF5 5736 bytes
SHA-256: b634e3c2d384040c984287701f6cdca247d462abe089ecd48bab5df832e95742
font_01_sfnt_off0000f055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF055 10568 bytes
SHA-256: 2e5d6f52376d5c6655e68b834c308dd7b8839781dc11f97357e1fdf12f38b996

Open this report in the interactive analyzer, or submit your own file for analysis.