Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf98d947b66eb98…

MALICIOUS

PDF

64.0 KB Created: 2021-09-19 23:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 54640cc8634d09d607052db4b77cee06 SHA-1: d8f9c30872753d258aee23ac3e4d12ff310232ec SHA-256: ddf98d947b66eb98318d90d5e7e2c42399aafaec11c72320b855c4a9936888c2
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on disposable domains, indicating a link farm designed to obscure the ultimate destination. The ClamAV heuristic identifies it as a phishing trojan. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution attempt, likely involving a malicious PDF download.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://medicalproduct.hu/images/files/73416205416.pdf In PDF document text
    • https://gmt-tw.com/app/webroot/userfiles/files/fupedorafenotelumavu.pdfIn PDF document text
    • http://gasasosong.com/upload/fckeditor/file/sowiza.pdfIn PDF document text
    • https://detskeihriska.eu/ckfinder/userfiles/files/kagedamogijezubowotol.pdfIn PDF document text
    • https://plasy.com/uploads/file/49027796663.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/55194457080.pdfIn PDF document text
    • http://portableandcool.com/files/files/warej.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139a8784d1f4---99874461558.pdfIn PDF document text
    • http://ydis.kr/userfiles/file/071653453503.pdfIn PDF document text
    • http://danies.ru/ckfinder/userfiles/files/pemaxu.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents/files/59892376990.pdfIn PDF document text
    • http://glttek.com/userfiles/file/maxobitamaperapuji.pdfIn PDF document text
    • https://strategieb2b.ca/userfiles/file/veduxemenibopexuxebimuk.pdfIn PDF document text
    • http://vititanon.com/user_img/files/bofudugowu.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/75266678985.pdfIn PDF document text
    • http://www.tivafa.hu/upload/file/72081598292.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/34d5db7127bcebfb5b1963e3954eed74/22804068288.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/36770028041.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/jedutumi.pdfIn PDF document text
    • https://ambulatorioveterinariosismondi.eu/file/25112306826.pdfIn PDF document text
    • https://encoyun.com/calisma2/files/uploads/25521696790.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/72539149660.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/99844005173.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/85682044835.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=cod+apk+only+latestPDF link annotation

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