Malicious PDF — malware analysis report

Static analysis result for SHA-256 b275acc54b96480d…

MALICIOUS

PDF

59.5 KB Created: 2021-09-18 19:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a48dd0dbecdcb4806d3010865b536ccc SHA-1: 6bd0eb1115a9cc5f046ed856a360fd472deb702b SHA-256: b275acc54b96480dd01512f4201714a48811b496c58250d37c336ea6ad2d0e06
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains, indicating a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly suggest malicious intent, likely involving exploitation or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7156

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.
  • 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://theofficeplus.com/userfiles/file/45596191736.pdf In PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/mefixikun.pdfIn PDF document text
    • http://houselandia.ru/files/tubosurove.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/wasagagogedosepojowukoko.pdfIn PDF document text
    • http://china-miyaco.com/img/file/202196225413.pdfIn PDF document text
    • http://myesen.life/userfiles/file/navalunelego.pdfIn PDF document text
    • http://henzefashion.com/userfiles/file/89882920716.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/bofulapasisirilozina.pdfIn PDF document text
    • http://jenan.com/ckfinder/userfiles/files/gukikebuxir.pdfIn PDF document text
    • http://www.yevres.fr/ckfinder/userfiles/files/jopuniwukibo.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/81f760aa782ce7ed7a560e304f55c486/78917416617.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/kasebakojekekotiro.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/34049886728.pdfIn PDF document text
    • https://proartgaleria.hu/files/files/joxuvawurerovetagura.pdfIn PDF document text
    • http://lexen.ca/userfiles/files/79032474855.pdfIn PDF document text
    • https://vico-domrep.com/ckfinder/userfiles/files/45732826653.pdfIn PDF document text
    • http://amindoost.ir/images/upload/files/41117576781.pdfIn PDF document text
    • http://3qlohas.com/CKEdit/upload/files/ridazewasip.pdfIn PDF document text
    • http://infinity-c-t.com/userfiles/file/10094576789.pdfIn PDF document text
    • http://polimak.pl/userfiles/file/77120876057.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3391edb7---mogudoxajotufujubudukum.pdfIn PDF document text
    • http://signauction.net/userfiles/file/visizem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+send+full+videos+on+androidPDF link annotation

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