Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b3e233a73a368d…

MALICIOUS

PDF

66.6 KB Created: 2021-02-14 14:11:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2f20b3ec01192c37de928b56a63adeb2 SHA-1: 1e3817f3fff55c582af5aaa578b55783b3086fbc SHA-256: a8b3e233a73a368dfaf277908c2b0b7abfbb0e92b431420d5ad4c4eb5e33eb2e
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://maypoin.ru/wix?keyword=shadowrun+5+chrome+flesh+pdf PDF link annotation
    • http://dehydratedoriginalgoodness.com/135725466695cdl9.pdfIn PDF document text
    • http://homebig.space/baahubali_telugu_movie_free0tdpl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_601b4242e556f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495526/normal_5fde92669e660.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414167/normal_5fcfadf66777e.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/batiku/go_math_grade_6_workbook_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/aprender_a_dibujar_paso_a_paso.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/64230245020.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/main_chora_chamar_ka_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/chakravyuha_movie_songs_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/tomcat_application_server_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/diduwajasalopamimap.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/93085953785.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/attached_audiobook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/50548567256.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/excel_conditional_formatting_after_a_certain_date.pdfIn PDF document text
    • http://zefobik.epizy.com/63995547354.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_off0000c64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64B 5716 bytes
SHA-256: ddf5dfe93b968b86401b5d629ed3ec1cdbc649dbd1084fa970381874bb684327
font_01_sfnt_off0000d9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B1 10596 bytes
SHA-256: c44b4198ca532ac88e0cc2973863bfd4f9bc0aa8f6cb913dda6b91604f2ba3b1