Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27116da3b5db3e3…

MALICIOUS

PDF

92.5 KB Created: 2021-09-07 12:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bb91b16343dd5dc72a50dc25415cdf77 SHA-1: 7fe9a7b577cc98eb01f0a640b0e23620205cb6c6 SHA-256: e27116da3b5db3e3144a1d2a32537590c32e686c678c61e7fe101f70e72ca718
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised or disposable hosting domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The document's structure and URL patterns align with common tactics for luring users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://ellenia3.eu/userfiles/files/vukatonefiwugadulobomona.pdf In PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/lofupavifotejokixasaja.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/62997896465.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/sekidizapugapozogesaturex.pdfIn PDF document text
    • https://garnizone.com/userfiles/file/25339063387.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089a9b664d76---zonaboxetelumawoxowal.pdfIn PDF document text
    • http://bloemenwinkelindex.nl/images/uploads/bipuvef.pdfIn PDF document text
    • http://heatherjansch.com/ckfinder/userfiles/files/pixizozarikaluxut.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e00c4881034---gukuwazitod.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b888f7aba80---lubufujigudariwusadafu.pdfIn PDF document text
    • http://indyskischool.com/ckfinder/userfiles/files/felogifebozaxujadikagovu.pdfIn PDF document text
    • http://jeremypourstarlight.com/clients/5/53/539822683240d2210db56c0084569a8b/File/11738725292.pdfIn PDF document text
    • https://gencshow.com/upload/ckfinder/files/turivexip.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/67f4q6j0mm45rchnr4gekvaqsb/4614359023.pdfIn PDF document text
    • https://andana.us/files/files/tisamitavuwilevudogitasil.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/40456217495.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/b1fef0de2ec60622a45f223418cd4e26/zajisutinikafus.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/9ioocgg783fgtf25dm2qc77voo/wowivefidam.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/6sh0don8hbjgujcp5a3gfjk8ki/lavoderupitikumewobud.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/e0e49b228397bef26db8daad02580899/52044586795.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/qviglf1vbaje6sgplp24s0f593/lezikagupumawonupetadik.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d99fa7af23f2b55a380df6db77485eeb/24080297775.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/58524680787.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=pile+foundation+analysis+and+design+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10453 10788 bytes
SHA-256: 88148038aa03bcf41e6b229c599251f5cc6bc3a0bd71575ae74f64ecf1331cf1
font_01_sfnt_off00011d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D16 18192 bytes
SHA-256: 3d0e6837cd959fc38f5271ff4321a1fb32b72c84c02462b097be24f0873995f0
font_02_sfnt_off00014c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C6C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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