Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ecc8224739bdc5…

MALICIOUS

PDF

89.1 KB Created: 2021-03-29 15:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3f9a7f4f541bf14dc44c4cc21539421c SHA-1: aff8d5fce65c970bd53dcdbb8e2c0b8c7681a7d7 SHA-256: b1ecc8224739bdc5662df0076647d8c337dad8a4d102c26689c1622b1399b765
96 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 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 0.9996

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://vilenefex.ru/strik?utm_term=heir+of+fire+series+order PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490141/normal_6005a1e9ac435.pdfIn PDF document text
    • http://xixofafil.medianewsonline.com/bridge_abutment_design.pdfIn PDF document text
    • http://doorstepcomputers.com/bubelabapiwofewavegufovuvzm35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472481/normal_5fe8b9052ceb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409246/normal_5fca765aabb17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460243/normal_605f8fed960ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_60278e9941311.pdfIn PDF document text
    • http://fojefojegut.medianewsonline.com/66959035450.pdfIn PDF document text
    • http://mabay.fun/tonulusundsp0y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_6031fba6daddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413375/normal_6027c36ca04a7.pdfIn PDF document text
    • http://podeves.xyz/jodebujimoruluxivauc1sh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5ff1dd5305624.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/sewamos/l_hate_you_i_love_you.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/lexico_grammatical_features_report_text.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/40886615447.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/bissell_turboclean_powerbrush_pet_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/how_to_program_s10-s3_uverse_remote.pdfIn PDF document text
    • http://genolewedusu.myartsonline.com/topimutogareziz.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/baahubali_1_tamil_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/nogibewowu.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/87664992231.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_off000121fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121FC 4620 bytes
SHA-256: 6b6945a4703b23cac0b0d16f6f7dd2f4dd9970fd19a359650579643faa04ed96
font_01_sfnt_off000131bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BF 10980 bytes
SHA-256: 96d670f3405c25f872df2950aad94ee7a48536e68b6ac819afd07dbb62da93ec

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