Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c5dd09240884cc…

MALICIOUS

PDF

67.0 KB Created: 2021-10-03 13:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2ba5dbe722603482a4068968ece3deed SHA-1: 46e9226ceb13e248efa5dabd1a3f301675a34712 SHA-256: 46c5dd09240884cc239dabb2bd9b6ccf2b3c7c3c69d87cd63231656e48ccbb3f
94 Risk Score

Malware Insights

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

The PDF file was detected as a phishing trojan by ClamAV. It contains numerous embedded URLs, many of which point to disposable domains, and is flagged as a link farm. The presence of embedded URLs suggests an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4539

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
  • 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
  • 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://medrea.ru/upload/files/33138100125.pdf In PDF document text
    • http://xfswchem.com/upload/files/12632033367.pdfIn PDF document text
    • https://promoform.coreform.it/uploads/file/mujabamavini.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/55799323823.pdfIn PDF document text
    • http://tangiahoang.vn/Images_upload/files/wawiromag.pdfIn PDF document text
    • http://gizmakina.com/depo/sayfaresim/file/14075151405.pdfIn PDF document text
    • http://kayapaliinsaat.net/file/kidulufoputejoli.pdfIn PDF document text
    • https://htmlpanda.rockeit.com/userfiles/file/jimelawuwisetujol.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16134c7e226c75---19826964833.pdfIn PDF document text
    • https://lanegarrett.net/userfiles/file/28957923852.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/delapav.pdfIn PDF document text
    • http://52fotki.ru/ckfinder/userfiles/files/81384518627.pdfIn PDF document text
    • http://www.dean-cpa.com/files/adminpic/file/ketutoxabajune.pdfIn PDF document text
    • http://dmkaudit.sk/101/upload/file/33277571257.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/tenetunusuze.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/82851531361.pdfIn PDF document text
    • http://giaydantuongphongkhach.net/images/news/file/vusenatedurotewulolak.pdfIn PDF document text
    • http://hoadon-dientu.net/images/files/4714959135.pdfIn PDF document text
    • https://bilegt.mn/userfiles/files/62558303678.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/nopopukafilomejulatareg.pdfIn PDF document text
    • https://www.weboonline.com/ckfinder/userfiles/files/futosuwetorimakeme.pdfIn PDF document text
    • https://wroclawmodelshow.pl/ckfinder/userfiles/files/99578911885.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/gogijajejimiwozetabipa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=hebrew+word+for+old+testamentPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC088 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89A 17908 bytes
SHA-256: 98b5c90fe4e4394ba2bea352716416abfa80e471d61e42a75ff1180327cac2a6

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