Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5b9fbb6378640e…

MALICIOUS

PDF

50.0 KB Created: 2021-05-13 00:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b1cf4e130d3fa2590faaf47841842b99 SHA-1: 2f88ecdaedc099f5df5d457c0fcd8a953e84db3a SHA-256: 1e5b9fbb6378640e4fe5c1fe81bbe1669aa95497a8577ea68cdb6c257e5c1f6e
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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://vilenefex.ru/strik?utm_term=17+day+diet+cycle+1+egg+recipes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450256/normal_6050eb9297210.pdfIn PDF document text
    • https://cdn.sqhk.co/lexikegije/gggDibi/dead_zed_3_hacked_unblocked_weebly.pdfIn PDF document text
    • https://cdn.sqhk.co/japedovak/YhdxFBR/53885740616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_6062ba5b7e21c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483623/normal_60057f1d3bd2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412896/normal_606aee80324f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420760/normal_5fc9abe30c0a8.pdfIn PDF document text
    • http://fafirofekow.22web.org/spring_framework_guru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cf9ca4-76a0-46c6-874f-c86148173c80/proto_reflex_rail_2014_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/benaam_movie_songs.pdfIn PDF document text
    • http://vopisatewegom.rf.gd/biopsicologia_john_pinel_descargar_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2532ce5-729c-4841-8792-db3905f7564e/mr._coffee_espresso_maker_cleaning_instructions.pdfIn PDF document text
    • https://14da0a27-f261-4d4b-8668-3a369f5c966d.filesusr.com/ugd/46429b_10675f8e290a40adbf2f547f69fc7f08.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xipavir/am_alone_images.pdfIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_08bbf71dd7b34ce291a7b8358970034c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d05d653-8ece-4df4-aae8-256217faed34/thus_spoke_zarathustra_kaufmann_translation.pdfIn PDF document text
    • https://506dbbd1-d4b3-44b1-a4c9-6b5d0cab6a23.filesusr.com/ugd/c75f60_294049d99afa483c8e0602c3f90c9075.pdf?index=trueIn PDF document text

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