Malicious PDF — malware analysis report

Static analysis result for SHA-256 b029274390305717…

MALICIOUS

PDF

38.2 KB Created: 2021-09-18 05:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3331318bb5129ef55bbede50c49f376b SHA-1: 7dde2da4556c9044bfb0dccb90c634ea7c06fc0e SHA-256: b029274390305717fae2fd386971a46638fee644e5839351c80386619647b630
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file is identified as an image-only lure, typical of phishing campaigns, designed to trick users into clicking embedded links. The heuristic 'PDF_IMAGE_LURE' indicates a screenshot disguised as a document with a clickable action. Multiple URLs were extracted, many hosted on disposable domains, suggesting a link farm used to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8144

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://membermimpi.com/contents/files/11970050477.pdf In PDF document text
    • https://mandarinkinesiska.com/userfiles/file/23092644848.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614118a306288---79985427746.pdfIn PDF document text
    • http://charolais-hessen.de/write/userfiles/file/zafudoladesa.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/cef43b33e31158a2068eaec839ab04c6/15124658298.pdfIn PDF document text
    • http://avtokit116.ru/!upload/files/27193768470.pdfIn PDF document text
    • http://ogcdc.org/uploads/ck_upload/files/382715257.pdfIn PDF document text
    • http://mcutech.net/files/30330705749.pdfIn PDF document text
    • https://www.sudoku-cool.com/ckfinder/userfiles/files/dixegilezudoboti.pdfIn PDF document text
    • http://ulv-fogger.es/d/files/kefuwevesanajozuv.pdfIn PDF document text
    • https://www.milestonesmn.org/ckfinder/userfiles/files/60157102985.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20210917_DF9BCD4DA9D4CDEF.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=how+run+ios+apps+on+androidPDF link annotation

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