Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66ed75fd03dfd4b…

MALICIOUS

PDF

73.5 KB Created: 2021-02-25 14:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6e3fceca29d7f5b0cb042f4201aadb24 SHA-1: a3ac5ef6977332f6c0f952952554f8b00476f1d6 SHA-256: c66ed75fd03dfd4ba96eeff8e53445da6ffec8d879bc871fea2d3c6ef95279fe
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to movie search terms, suggesting a lure to encourage interaction with the embedded link.

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://druttle.ru/award?keyword=fifty+shades+of+grey+similar+movies PDF link annotation
    • http://shtampshop.ru/therapeutic_foster_care_asheville_ncckavp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450418/normal_602e3b4e0e012.pdfIn PDF document text
    • http://save50it.pro/facebook_cover_page_template_2018w4dj0.pdfIn PDF document text
    • http://it50disconto.pro/pltw_1._2._4_answerssptnx.pdfIn PDF document text
    • http://mpvideo.org/black_and_decker_bread_maker_recipes_b2200twtyz.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/33138897180u0z80.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/rudelazifizuvo/hotpoint_ariston_aqualtis_washer_dryer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/amazon_prime_video_apk_for_firestick.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/nasavozogixuzisuvinon.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/2004_cadillac_xlr_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/38333752619.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/lidimukutukizegenejifuso.pdfIn PDF document text
    • http://tanozetodane.rf.gd/89417842821.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/sizegimajexovezexotiz.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_off0000e3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E9 5436 bytes
SHA-256: fb9ad811614c17191a92e78106721256dfd620cb4191b16be3ce5a22031b195c
font_01_sfnt_off0000f656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF656 10184 bytes
SHA-256: 13d82939b3a7c33739f7734bd9a32039b4a96530b73b56617ba4e96d6d22a1a2