Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bbf9c3beaab850d…

MALICIOUS

PDF

54.8 KB Created: 2021-09-22 13:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: e9f6bb79849d3a31cfbbdb2385b0c7be SHA-1: 3ee44f794d11b552a76fa32579567de5839c3016 SHA-256: 0bbf9c3beaab850d861a1855620972160e9b07712a02c028bd4739efcf4b272f
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains, suggesting a phishing or link-farming attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6099

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pazzo.jp/js/upload/files/gunomotuzezofiduze.pdf In PDF document text
    • http://hong-tour.com/FileData/ckfinder/files/20210902_680FC7E4FD2DDC53.pdfIn PDF document text
    • https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/vejobigebapix.pdfIn PDF document text
    • https://rajnnuhiddje.se/userfiles/file/41071904191.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/d085feadb086d53e7783c95cf2b3c945/nusexurarimuxarekep.pdfIn PDF document text
    • http://hai-bi.com/uploads/files/202109101231491821.pdfIn PDF document text
    • https://aptitudeclass.com/ckfinder/userfiles/files/jijukafaz.pdfIn PDF document text
    • https://soechi.net/userfiles/file/laluxufexiwe.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/jedixedo.pdfIn PDF document text
    • https://mimpiindah88.com/contents/files/zowaten.pdfIn PDF document text
    • https://voziky-paletove.cz/mctree.cz/pictures/other/files/wumigivewelekam.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/88873608812.pdfIn PDF document text
    • http://konberdbio.com/upload/files/wasejarafeviveloluritopu.pdfIn PDF document text
    • https://ip-pharma.net/data/files/liroto.pdfIn PDF document text
    • http://mobilahomedesign.com/userfiles/files/waduzegivexivuru.pdfIn PDF document text
    • http://sdv.sk/userfiles/articles/file/93402724713.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/74221318876.pdfIn PDF document text
    • https://rafautama.com/uploads/file/67722167222.pdfIn PDF document text
    • http://gamax-moto.cz/data/dokumenty/12824510581.pdfIn PDF document text
    • http://ceomit.com/fckupload/file/bifupegor.pdfIn PDF document text
    • https://tecnicadovolante.com/images/file/nugivadi.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/88406088950.pdfIn PDF document text
    • http://quangcongluc.com/upload/files/74643476864.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=the+neverending+story+1984+watch+online+freePDF link annotation