Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c4aae702b06b5a…

MALICIOUS

PDF

83.2 KB Created: 2021-02-28 00:24:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ef94c33396c28020c010ed6eef9f8799 SHA-1: deb90f4a516aa486fe7b0d460945605e275af6cd SHA-256: b2c4aae702b06b5a5229c409ba9f6a5a41df622989a1b8b929d03b77ab72ef0c
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one specifically targeting a search query for a popular movie, suggesting a lure to a phishing or malware distribution site. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using disposable hosting for link farms, further supporting a malicious intent. While no scripts were explicitly extracted, the ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics strongly indicate malicious content within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9484

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://dugedepap.ru/award?keyword=percy+jackson+movie+3+watch+online PDF link annotation
    • https://cdn.sqhk.co/jiluputumusi/JIgiCii/kesopezajojusigizudavefe.pdfIn PDF document text
    • http://vesibigezedenu.iblogger.org/campfire_song_percy_jackson_sheet_music.pdfIn PDF document text
    • http://pevetune.66ghz.com/financial_ledger_template_excel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501654/normal_5fca0e43603d0.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/0Njchhf/97379838696.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/hfvgdji/56399021516.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380379/normal_5fe31e9665943.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xesoxudonututad.rf.gd/verizon_fios_router_forgot_admin_password.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/95111597586.pdfIn PDF document text
    • http://mivowejow.rf.gd/diwokibudak.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/tadasexe.pdfIn PDF document text
    • http://jesegusanasukan.epizy.com/bukedde_tv_2_app.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B8 5596 bytes
SHA-256: 282fbd7183b9a24d559a418478823997d3bdece5cdc848c0005eabfcaac7ca50
font_01_sfnt_off00012bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBC 10468 bytes
SHA-256: d75561aee97d2f144e375034a42c0d7b4cd3aaea2018d079067998bbff27b3e5

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