Malicious PDF — malware analysis report

Static analysis result for SHA-256 baaee9469c2c43e7…

MALICIOUS

PDF

70.8 KB Created: 2021-02-23 23:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 58f20f1d71967114b69be5896fda96a5 SHA-1: 058228c556f75c2556b35014ff995b73f66d6665 SHA-256: baaee9469c2c43e70cf4c68e2f25d2c384d863c74ccd3f39a0ea71f36ac2704e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'crophysi.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://crophysi.ru/wix?keyword=altered+carbon+rpg+pdf PDF link annotation
    • http://whitecheat.xyz/please_install_sqlite3_package_manually_node4f68a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498978/normal_602c468dce7cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454550/normal_602d1dac4319e.pdfIn PDF document text
    • http://eliyalte.com/sheetz_near_me_foodvz2gc.pdfIn PDF document text
    • http://monoga.space/17119999910ijg8o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481411/normal_5fc6b4937f7b0.pdfIn PDF document text
    • https://cdn.sqhk.co/pefatipi/eWhj258/64016170880.pdfIn PDF document text
    • http://barojenixumaja.iblogger.org/physical_science_worksheets_9th_grade.pdfIn PDF document text
    • http://xisubov.iblogger.org/annual_leave_form_template_nz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_6019c1f16517b.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/kawotexulozax/maduracion_placentaria.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/70249113897.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/mewuzokuraj.pdfIn PDF document text
    • http://jizozekawa.epizy.com/block_diagram_word_template.pdfIn PDF document text
    • http://jezirateba.rf.gd/ibm_bpm_lombardi_interview_questions_and_answers.pdfIn PDF document text
    • http://goxabepod.rf.gd/sevuxisodukoxajirakedemi.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/anunnaki_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/cool_hd_wallpaper_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/surah_al_rahman_arabic_text.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/windows_bitmap_font_format.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_off0000da23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA23 5272 bytes
SHA-256: 5c41bca34124ba993e3f5205b33c30afc3c41e8b884862ae211513c2b31dedbb
font_01_sfnt_off0000ec20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC20 10032 bytes
SHA-256: e623e3713dea5a1299294f837bc0bb82bca6fa11018b42c7bd30b061772a89a1