Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bf79d7e62f3fd5…

MALICIOUS

PDF

75.4 KB Created: 2021-03-03 08:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 384bf705209ad6efe47c26282591cbae SHA-1: f1fbaf69cf0a524fd44d129a62675d2d213bbbee SHA-256: 47bf79d7e62f3fd59856017ba66b55eba62dbd1a41259fb2fe691eb6e39ab014
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://fokemale.ru/strik?utm_term=times+table+activities+printable PDF link annotation
    • http://rowowesofazov.medianewsonline.com/64717242431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_601d26e82601d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448985/normal_5fcbb1852067b.pdfIn PDF document text
    • http://jaxopofo.22web.org/16184069149.pdfIn PDF document text
    • http://nomevufaneboja.mypressonline.com/harry_potter_y_las_reliquias_de_la_muerte_resumen_del_libro_de_daniel.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/war_of_the_worlds_movie_1953_ending.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480749/normal_5fe0e0174efbd.pdfIn PDF document text
    • http://jowemiverinoxop.iblogger.org/48559962261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wotidupodugi.myartsonline.com/technical_drawing_software_for_mac.pdfIn PDF document text
    • http://nimuzujonigidu.rf.gd/vinufakomar.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/76357100200.pdfIn PDF document text
    • http://gidubivej.rf.gd/muxopopepitasi.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/56682735926.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/salem_s_lot_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/check_internet_speed_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/mokegigerawexolizi.pdfIn PDF document text
    • http://guwajip.epizy.com/46703703346.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000eb84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB84 5228 bytes
SHA-256: 9154e9716064b81d0724f891f83af1a70d33c51316f4fb96b74537c29f02ca20
font_01_sfnt_off0000fd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD37 10536 bytes
SHA-256: 606831b6427e12c18292c9473a284461ee4efdae0f0b740be643233a4ac3d7de

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