Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ea4bdf6f045429…

MALICIOUS

PDF

68.1 KB Created: 2021-10-01 18:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: eaa7b413ed36c7a8cb11a6d8800d5efd SHA-1: 3b0cb8581160296605efe6799301ca2006a66ac6 SHA-256: 03ea4bdf6f045429c2aca8b079cb8390b36ffff11ba3130f2d353de1cf8643a9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to link farms or disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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 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 https://vokalensemble-vocembalo.ch/userfiles/file/95604837817.pdf In PDF document text
    • https://www.e-oswiata.olesnica.pl/ckfinder/userfiles/files/44512037821.pdfIn PDF document text
    • http://lagrupacio.cat/file/foziwaliradimipumubul.pdfIn PDF document text
    • https://livredart.com/ckfinder/userfiles/files/fawarifakewazosumofok.pdfIn PDF document text
    • http://satyavnetworks.com/fck_upload_images/file/33867654996.pdfIn PDF document text
    • https://amt-alarmy.pl/userfiles/file/zugalig.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/lenunatinedamaminot.pdfIn PDF document text
    • https://cosmeticdermatologymiamibeach.com/uploads/data/files/66797405648.pdfIn PDF document text
    • http://drivingtesttips.ie/fckeditor/userfiles/file/97860801581.pdfIn PDF document text
    • http://gazomotor.com/allinone/file/gexodowodikefibiwiva.pdfIn PDF document text
    • http://precisao.net/files/files/gawejemaxarox.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///59165659522.pdfIn PDF document text
    • http://pokwuttibut.com/file_media/file_image/file/6840656144.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/gibuwapubalepexajakiwe.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/86978459841.pdfIn PDF document text
    • https://e-tta.com/app/webroot/userfiles/files/zuzaxometomotesedikobu.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/58284132082.pdfIn PDF document text
    • http://akiisushi.com/uploads/files/bovasetitipulajetimepu.pdfIn PDF document text
    • http://hacoauto.vn/upload/files/padazoxunokabatezarefi.pdfIn PDF document text
    • https://bawauang.com/contents/files/zanejuwinisodazalip.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/nudemoxoxoxugejipogixik.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/zolutizidozeboxarabofekis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=ielts+speaking+ebookPDF 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_off0000ad13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD13 10508 bytes
SHA-256: e5b1eb66062d3319dacef9d1ff0a4143854ebf9100eda567c6c3c62bd8ee6829
font_01_sfnt_off0000c4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFB 15196 bytes
SHA-256: 295454540b0729489cebb2e7fda68c83d891d4035c5b4e394695772c5c3fdf99

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