Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6f35070c5588a8…

MALICIOUS

PDF

62.0 KB Created: 2021-09-20 01:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: dc37c1bb7e73b08f0ba3a9929ca20b43 SHA-1: ce312b2b2ea7b75fe6ce979c4dd06379fbd36464 SHA-256: 4a6f35070c5588a83a9dd7274556d3cf60953eee1294ccb2252d4e20645d6b62
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to disposable domains, suggesting a link farm designed to host malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan delivery intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious document likely intended to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4970

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://theshamrockpublecco.it/file/pofeguvixenawire.pdf In PDF document text
    • https://absoluteanytime.com/media_file/files/files/tawigamebaluludatakaza.pdfIn PDF document text
    • http://gibisch.org/files/files/18456687900.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/87188144800.pdfIn PDF document text
    • http://floramarble.com/uploads/32251576635.pdfIn PDF document text
    • http://www.cavice.fi/tiedostot/files/78180582866.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/8455cd85bbf297a6da7de81b2a80d725/xawedesakiwojafan.pdfIn PDF document text
    • http://rigassprotes.lv/uploadz/file/pefesopixadapebonumuva.pdfIn PDF document text
    • http://cy2hand.com/userfiles/bonoxixenopigom.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/sudutekul.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/26288142373.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/161331f8a3ee06---dosetasamuromonasadukeke.pdfIn PDF document text
    • https://conexus-study-abroad-travel.com/ckfinder/userfiles/file/xaxolurapux.pdfIn PDF document text
    • http://n2nlah.org/UserFiles/file/90919715376.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/23021096067.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/98953154120.pdfIn PDF document text
    • http://santabruna.cl/upload/file/fobibe.pdfIn PDF document text
    • https://milliondollardesiclub.com/upload_files/featured/files/55560934063.pdfIn PDF document text
    • https://0900107678.com/upload/file/vadazadexal.pdfIn PDF document text
    • https://telorgabus.com/contents/files/1434150423.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/vepupovodunaduweb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=unturned+crafting+guidePDF link annotation