Malicious PDF — malware analysis report

Static analysis result for SHA-256 42dce414dbb7d896…

MALICIOUS

PDF

84.6 KB Created: 2021-02-02 07:43:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 14e589800f4ee9a93097cedb23409356 SHA-1: 4fb7ee9b75588d21ccac76b129fd6acffec2a822 SHA-256: 42dce414dbb7d896685fde07566d906b7e6f8c18de212e73bd29679990634cfa
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9374

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 https://jottigo.ru/aws?utm_term=annual+report+catur+sentosa+adiprana+tbk PDF link annotation
    • https://guvefivilemu.weebly.com/uploads/1/3/4/3/134397682/d572961cc56cf5.pdfIn PDF document text
    • http://onlinetiser.website/juwixiwubavosea316c.pdfIn PDF document text
    • http://1eyvgo.xyz/francis_ching_architectural_graphicsnknii.pdfIn PDF document text
    • https://cdn.sqhk.co/bebiwamulanu/bgh0Lgf/vewururejubelavonodawo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403556/normal_5ffed3319ba54.pdfIn PDF document text
    • https://votorivoxezi.weebly.com/uploads/1/3/4/0/134095847/e7807c84974b3.pdfIn PDF document text
    • http://reabook.online/1952952150563xz0.pdfIn PDF document text
    • https://joralonu.weebly.com/uploads/1/3/1/6/131607047/wutuvuwufudunuge.pdfIn PDF document text
    • https://cdn.sqhk.co/xupasutejos/eY0jbew/67100022609.pdfIn PDF document text
    • http://hugertely.xyz/jusozuvatipuw0noeq.pdfIn PDF document text
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/81d64a8df2c4.pdfIn PDF document text
    • http://skidki-day.site/gunshot_smoke_pngstz8q.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewejav/geGjdz0/norefurer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484114/normal_6005b5459f79c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505326/normal_5ff0ed95ee348.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/ZVhbbgi/zombieland_3_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/big_ideas_math_book_answers_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/cambridge_young_learners_english_starters_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/novexev.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/63378614235.pdfIn PDF document text