Malicious PDF — malware analysis report

Static analysis result for SHA-256 661c64d38c02b234…

MALICIOUS

PDF

74.4 KB Created: 2021-03-28 18:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 32ed131f391aa9cd7cbad34e8757019a SHA-1: 15143fe2ee7cbb35de5ad2d8f0b534bbdf85b654 SHA-256: 661c64d38c02b2340bff5758f26a6688d8853527891291a23e37d5066fe0e82a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/wix?keyword=better+vampires+mod+skyrim+download PDF link annotation
    • http://vuvuga.xyz/84384243372hy5fe.pdfIn PDF document text
    • http://riwuvodobopexu.mywebcommunity.org/vevupuk.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/61240033502.pdfIn PDF document text
    • http://rixujewo.getenjoyment.net/biochemistry_courses.pdfIn PDF document text
    • http://kismyketio.com/microsoft_band_28c8u8.pdfIn PDF document text
    • http://norelowugazilu.22web.org/topuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_5ffb8ebc594cf.pdfIn PDF document text
    • http://limecash.xyz/karodifuvugnvae.pdfIn PDF document text
    • http://ziwegiwe.iblogger.org/someone_like_you_piano_sheet_music_easy.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/hygiene_definition.pdfIn PDF document text
    • http://zatorigixoluji.iblogger.org/naruto_shippuden_senki_beta_cheat_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_601cfe10e3e01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_604ec6b6c5984.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/makumapikeze/nc_drivers_ed_practice_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/civilization_revolution_android.pdfIn PDF document text
    • https://ebed6276-6372-4ddf-adad-9a0fa504b99f.filesusr.com/ugd/805d2a_cb5fa0288027408b89f5ebeee67604ec.pdf?index=trueIn PDF document text
    • http://zikoliduxa.atwebpages.com/87888049554.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/manuraguworerat.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/cozy_house_sheets_coupon.pdfIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_2a2b51c0750746008d95a5fca7cf15cf.pdf?index=trueIn PDF document text
    • https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_cb9a4347e6dd4dae8184ea3f28fd8913.pdf?index=trueIn PDF document text
    • https://55f5e71c-5f54-469f-9449-301c43944234.filesusr.com/ugd/bbdb65_a03ee8e64771447b84b2b3de14e784f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/befafuni/cambria_math_bold_font.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 5472 bytes
SHA-256: f59579e62127716e06e8971136f0b156ebee201a559b35680d88264b909cb57c
font_01_sfnt_off0000f901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF901 10380 bytes
SHA-256: 686069a81c26f96d58a95f7c90b31ab85d7af7a0dfdcfc19256c0c1f5b4e9ebd

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