Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbcae2cadbe863a6…

MALICIOUS

PDF

87.6 KB Created: 2021-03-16 02:33:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d188ff53da252186bc75b57294b278c3 SHA-1: 7bbd05f14a802235128015b186966763c7512a80 SHA-256: dbcae2cadbe863a6e662269b34d697148f831e683e2d63cba3b54fee2ab6c118
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://nipisod.ru/wix?keyword=objetivo+de+las+figuras+geometricas+en+los+ni%25C3%25B1os PDF link annotation
    • http://pribor-poverka.site/busemijafijidagowopufe8otwg.pdfIn PDF document text
    • http://liginuj.22web.org/most_common_mistakes_in_english_words.pdfIn PDF document text
    • http://kegujusotuk.iblogger.org/how_to_use_tempa_dot_celsius.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_5fd632de8ffd6.pdfIn PDF document text
    • http://fawetugamuxix.66ghz.com/mafawutomenerumewagaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473359/normal_600967de57a4f.pdfIn PDF document text
    • http://snapchat-alert.com/biochemistry_course_syllabus867jm.pdfIn PDF document text
    • http://metinozub.iblogger.org/gidofogok.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/timituvupame/nisilup.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/fikevuxi.pdfIn PDF document text
    • http://kajopulijus.epizy.com/genie_intellicode_keypad_change_code.pdfIn PDF document text
    • http://daxevekiwenux.epizy.com/article_writing_format_ncert_class_8.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/ledorimon.pdfIn PDF document text
    • http://fusuxitizubuka.epizy.com/tonovug.pdfIn PDF document text
    • http://zogemidagubaro.epizy.com/76644711296.pdfIn PDF document text
    • http://rejaramexalib.epizy.com/wawelujegokaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/279798053.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/dodge_ram_workshop_manual.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_off0001139a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1139A 5856 bytes
SHA-256: 625d1030c703a3b2e769bf103a981a4ebeb49efe180fd70e7d2477a7fe11da26
font_01_sfnt_off0001273c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1273C 12240 bytes
SHA-256: 6b4fb0bae2b1b87a0c52d4aa0044f1218a2a75765e1c7452d38f42dba05f9024