Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e82e515f112e082…

MALICIOUS

PDF

76.9 KB Created: 2021-02-02 17:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c991f9c44df1391eda991e6e5079affa SHA-1: 860ca5301ac4c55e85eae31794ca780c0068710d SHA-256: 6e82e515f112e08278e627a12dbd0fca134f11865e1f9da6e06971231dee2725
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The embedded URLs, particularly the one pointing to 'druttle.ru', suggest an attempt to redirect users to potentially harmful content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification, likely involving phishing or trojan distribution.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/aws?utm_term=bullets+of+justice+2017+movie+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5ff3017a07b64.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/gh7hjsb/descargar_the_pirate_plague_of_the_dead_hackeado.pdfIn PDF document text
    • https://xewezepi.weebly.com/uploads/1/3/0/8/130813550/7f1a5bcb2b.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/gjghzIq/woodworking_projects_for_beginners_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491164/normal_5ff76c9080607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464852/normal_5fd3402a74b23.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/gjih9PJ/wikexukatonojijenudovoke.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/jbknJq5/gebopavev.pdfIn PDF document text
    • https://wufovepujiz.weebly.com/uploads/1/3/0/7/130775368/bokesozamepiwa_wowatarig_taben_woxapimevuv.pdfIn PDF document text
    • https://xidoteruredogon.weebly.com/uploads/1/3/1/4/131454367/6539d.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/nawuvud/puxekatapoke.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/ancel_ad310_manual_espaol.pdfIn PDF document text
    • http://salalew.epizy.com/sovurisapidexuvafop.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/73980541064.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/animal_crossing_wild_world_guide.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/18730474736.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/contact_backup_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/nctb_books_of_class_7_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/65064414903.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/birthday_card_design_images.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_off0000e5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D7 5408 bytes
SHA-256: 3148aba5219d30e1ec5269d3e9bce47c0627c8dae851174e0f71319353afb747
font_01_sfnt_off0000f84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84C 14524 bytes
SHA-256: 7ab05e68f9a32bf28dad0cb5d226805d87f12f64a1460acfe76efde326d301fe

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