Malicious PDF — malware analysis report

Static analysis result for SHA-256 48edb19d26f45c62…

MALICIOUS

PDF

94.8 KB Created: 2021-02-12 08:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1e3adc62b0da72d07e8e11fc77231b33 SHA-1: 0eadb634cc75544026ad89cf808e8a4b508da376 SHA-256: 48edb19d26f45c62c96a86da96781b0f623e1788f8e0648c38b557c90b04236b
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of a 'download button' heuristic and an embedded external URL suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards a malicious document designed to trick users into downloading further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/123?utm_term=realidades+2+para+empezar+p-2+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481673/normal_5fc6ac6676f4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_6018c66ccb7a4.pdfIn PDF document text
    • http://joretuvivofip.22web.org/allegri_miserere_mei.pdfIn PDF document text
    • http://xoxibusu.iblogger.org/dawekegex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475406/normal_5fdf2f59ac436.pdfIn PDF document text
    • https://cdn.sqhk.co/godajaxox/ggD6Ogh/police_moto_bike_prisoner_transport_3d_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5ff6c81e8b3e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369324/normal_5fe3c7959b072.pdfIn PDF document text
    • http://wiruribadusa.iblogger.org/cool_fonts_for_instagram_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422631/normal_5fe54ced2ea76.pdfIn PDF document text
    • http://meweremidef.iblogger.org/shortcut_number_format_excel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_5fe6c212e8621.pdfIn PDF document text
    • http://jisilasi.22web.org/comparative_exercises_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482206/normal_5fc7631e22067.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/webipejonavuv/avengers_hd_wallpapers_free.pdfIn PDF document text
    • http://tibepaxun.rf.gd/sports_listings_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/nuxusabu.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/cisco_networking_academy_answers.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_off00013831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13831 5416 bytes
SHA-256: 9da8398095745c693eb346799e51eb4baad6c68f514127320585ca5c4494016c
font_01_sfnt_off00014aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AAC 10236 bytes
SHA-256: bdd67b2d43146d5f4cba8b30825cbb4a164beee952b4a722167e746cfd6ad914

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