Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96eaab26b5df701…

MALICIOUS

PDF

85.2 KB Created: 2021-05-26 04:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 734b82736026355d5bf6e8b5dd97d13d SHA-1: 0a2aa6d3dbadfed1920863496028f3a08151b6f9 SHA-256: c96eaab26b5df701e38889e9d712960605d3ce2ca9cf25a150124abb59f70110
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document prompts the user to install a browser extension or update, a common social engineering tactic. The embedded URLs and the ClamAV detection further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://mezovuduw.ru/strik?utm_term=best+free+hashtag+generator+for+instagram+2021 PDF link annotation
    • https://sunupukub.weebly.com/uploads/1/3/5/3/135319403/xiwipifesudimiw_vunusoge_zozare_felizobugab.pdfIn PDF document text
    • https://wariraxaluxar.weebly.com/uploads/1/3/3/9/133986847/37b074a791984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487200/normal_606b8f9cdb485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414172/normal_60266f1946a67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fcea58f5e41a.pdfIn PDF document text
    • https://rikomurisixub.weebly.com/uploads/1/3/1/4/131454733/5424459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447641/normal_5fe04cc82c86b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371004/normal_5fe4625104a8f.pdfIn PDF document text
    • https://malilojomatade.weebly.com/uploads/1/3/4/3/134354128/jemamiwaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414335/normal_6021239440ec8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408589/normal_6062a61d8a1c5.pdfIn PDF document text
    • https://ribiridoxa.weebly.com/uploads/1/3/0/8/130874248/7020519.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/07101b37-88b6-4593-a8e6-bed95a8e920d/where_is_the_nearest_fedex_shipping_store.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6cc80cb-f474-49aa-8dda-8db81b6b1d86/28094532880.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/is_midnight_sun_on_netflix_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/how_to_know_when_cuisinart_toaster_oven_is_preheated.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/osrs_mm1_bursting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/duzotezijuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/i_love_you_stinky_face_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/xakerorisofidebigixevan.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/bogenubujufefobipivilid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e59bc376-340f-4a73-9fd3-c532dfe7b180/bifagorod.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_off00010cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC5 5524 bytes
SHA-256: 87d927fab7b471ecb2adf7d18bb45616711dd2b30455204c4e9b3a0a4d734542
font_01_sfnt_off00011f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6D 11052 bytes
SHA-256: fbfc11548e1823124eaef6b67b719fc60fa3d48a832f5cd709ce806e5e48ac07

Open this report in the interactive analyzer, or submit your own file for analysis.