Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c182ea71e0a0e6c…

MALICIOUS

PDF

77.6 KB Created: 2021-09-19 12:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4e3066d811baeeba8b91f462528183f8 SHA-1: d68e44bac86a897cfc3e055973c417621f988a0d SHA-256: 7c182ea71e0a0e6ceca8738e3e6a590bc2b98def3ccb86130e600a80419d560c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external domains, many of which are likely part of a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The presence of external URIs and link farm heuristics suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7354

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://smidgel.ru/uplcv?utm_term=john+wick+chapter+3+parabellum+full+movie+watch+online PDF link annotation
    • http://www.tobywells.org/media/fckdir/file/tetolikagexa.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/444ebe920744104266636479672654d3/45041086250.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/ralopa.pdfIn PDF document text
    • https://paintingwithapassion.com/nbloom/fckuploads/file/soxopusulatufitekedaz.pdfIn PDF document text
    • http://93564497.com/userfiles/10906475820.pdfIn PDF document text
    • http://phonphangschool.com/upload/files/98618256017.pdfIn PDF document text
    • http://mrtowing.ca/Lawyers/userfiles/file/suviw.pdfIn PDF document text
    • https://buka.ru/sadm_files/putegafa.pdfIn PDF document text
    • http://azco.friend-match.com/upload/files/72873090447.pdfIn PDF document text
    • http://vanhacollection.com/images/files/96728215525.pdfIn PDF document text
    • http://radissonhoteltraining.com/userfiles/file/13964356403.pdfIn PDF document text
    • http://immopolignano.lu/images/83678090521.pdfIn PDF document text
    • http://isvpro.com/custom/files/lepugitig.pdfIn PDF document text
    • https://eletroluz-al.com/_IMG/img_internas/file/zuvefidapujadopixuda.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/tiwilisiteramawuraw.pdfIn PDF document text
    • http://nhatrangpalacehotel.com/app/webroot/upload/files/matasasageruse.pdfIn PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/ziredabuxirubogafo.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20210902_7C41D26B0646E181.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/xelalurixeforojaba.pdfIn PDF document text
    • http://qkmedica.com/uploads/userfiles/file/jazirunasakumivuvorefuk.pdfIn PDF document text
    • http://bkmarine.net/ckfinder/userfiles/files/1631753318.pdfIn PDF document text
    • http://nguyenphat.com/public/default/ckeditor/files/pefitujavesafuw.pdfIn PDF document text
    • http://cassotech.nl/site/data/ws/files/78064604985.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/vibabixavipip.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b5360125b---ditatojizekawojajefu.pdfIn PDF document text
    • 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_off0000eae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE5 11224 bytes
SHA-256: 175467022b5e6529327cb886760eb05c2cae95ca28e23720d129d341ef4de64c
font_01_sfnt_off000104ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1