Malicious PDF — malware analysis report

Static analysis result for SHA-256 248d389217d34b26…

MALICIOUS

PDF

80.4 KB Created: 2021-03-12 02:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cfb7613d89854395f39cc3dc44ca25d3 SHA-1: 05b93fc0b7f0eef1c7a2f634f47c656b3c137742 SHA-256: 248d389217d34b2672c3c29be69d6a225996e77655868170484a2fd2f5a413c8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9285

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://dafemum.ru/award?keyword=functional+testing+techniques+pdf PDF link annotation
    • http://shopwithsale.website/mezupigarabikg2nzs.pdfIn PDF document text
    • http://leopolds.space/pronunciation_guide_documentaryrq9pj.pdfIn PDF document text
    • http://closemaze.com/dean_lewis_be_alright_sheet_music_pianozfll6.pdfIn PDF document text
    • http://mebets.xyz/highway_code_riding_bike_on_pavementukofp.pdfIn PDF document text
    • http://lelofewadu.iblogger.org/23093502852.pdfIn PDF document text
    • http://fizuluwudig.iblogger.org/65204757638.pdfIn PDF document text
    • http://ig-about.net/23841918146d9fk1.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/que_es_una_composicin_en_artes_plsticas.pdfIn PDF document text
    • http://tabikola.online/zysw5.pdfIn PDF document text
    • http://artyom.guru/english_101_course_numberc1t9g.pdfIn PDF document text
    • http://refajunabewatog.iblogger.org/single_candle_images.pdfIn PDF document text
    • http://arenda-comp.space/15969501257j0tu8.pdfIn PDF document text
    • http://dajexori.mypressonline.com/changing_dewalt_735_planer_blades.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/93699137726.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/vezaxidazana.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/79014633141.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/72030900162.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/63196244201.pdfIn PDF document text
    • http://nuzifopivezalam.rf.gd/43148810103.pdfIn PDF document text
    • http://xenavak.rf.gd/what_generation_is_my_kindle_fire_d025.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/drawing_straight_line_graphs_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/38299447313.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_off00010c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C10 5404 bytes
SHA-256: d9210f79a50478efe7a9a27b1848f03b7deb0724ca4ed0e484938530f3cee6aa
font_01_sfnt_off00011e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6D 10696 bytes
SHA-256: d1388808a6e075d5439b8d25a04a82ae242d1bcc1c702344557e5a36a79c7e58

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