Malicious PDF — malware analysis report

Static analysis result for SHA-256 4422a625b8410669…

MALICIOUS

PDF

58.1 KB Created: 2021-09-15 23:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b5fb44ddc06d10306557d79d91372f8f SHA-1: 3cf27a093bb376ba5a5bce234bddc16020d9fed5 SHA-256: 4422a625b8410669cdb882326169b289e83c5333a54eaf43dadf0f2e7da0fa8c
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a critical heuristic indicating it is a phishing trojan. The PDF contains numerous embedded URLs, with one heuristic specifically flagging it as a link farm on disposable hosting. While no scripts were extracted, the PDF structure and numerous external links suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

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://ogcdc.org/uploads/ck_upload/files/zugasamawimobumakigofuzos.pdf In PDF document text
    • http://macabrey-luthier.fr/data/Files/86174057355.pdfIn PDF document text
    • https://mehfermobilsaglik.com/userfiles/file/57170179437.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/rapizobuxabuwimitelipor.pdfIn PDF document text
    • http://101balkon.ru/upload/files/mekarib.pdfIn PDF document text
    • https://12tiga.com/contents/files/49510759740.pdfIn PDF document text
    • http://swaptoys.org/ckeditor/uploads/files/jilinifexixutopunexodujak.pdfIn PDF document text
    • https://maxlinder.com/admin/assets/ckfinder/userfiles/files/39420478775.pdfIn PDF document text
    • http://oio.cn/uploadfiles/files/golutasivaka.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/b82c5c5e13be417e4582fd45822afe55/31145633910.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/31023200076.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613dfe9fda14c---55020137108.pdfIn PDF document text
    • http://chongthamphucthang.com/images/news/files/zexifif.pdfIn PDF document text
    • http://www.museopizarra.com/ckfinder/userfiles/files/64923522736.pdfIn PDF document text
    • http://union-montage.pl/userfiles/file/13318481641.pdfIn PDF document text
    • http://microsolder.hu/userfiles/files/95383824528.pdfIn PDF document text
    • http://satyamtracparts.com/userfiles/file/49337018003.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/sixutisarudujajokipepit.pdfIn PDF document text
    • http://speckrepej.com/upload/file/74081883054.pdfIn PDF document text
    • http://allefrgycg.news-read.com/upload/files/binoxiga.pdfIn PDF document text
    • http://gurukripapublicschool.com/userfiles/file/kigekusotugesokazoje.pdfIn PDF document text
    • http://qlionshousing.ca/userfiles/file/84360515573.pdfIn PDF document text
    • https://robustbrakes.com/administrator/imagetemp/file/99186009425.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/68160409327.pdfIn PDF document text
    • http://pampa.be/uploads/userfiles/files/zitemali.pdfIn PDF document text
    • http://vkp.ru/upload/global/file/xakugozuwimoratowipi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=best+hidden+call+recording+appPDF link annotation

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