Malicious PDF — malware analysis report

Static analysis result for SHA-256 649183f936604ce1…

MALICIOUS

PDF

77.2 KB Created: 2020-11-22 13:29:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9bde87e157d50d9444457c94cee36574 SHA-1: 9be67cef26b0c5c06749a1778bebbf2c209cb154 SHA-256: 649183f936604ce169846edea7ec3033950da2fa6d59890d1bd93fb9bc9d3c1a
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 0.9998

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://traffking.ru/123?utm_term=meiosis+lesson+plan+middle+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f89857957a28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f8721df6d136.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/752828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5fb53a0429d04.pdfIn PDF document text
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/loxuxatomov.pdfIn PDF document text
    • https://davuxafaketasix.weebly.com/uploads/1/3/4/7/134716677/juwesula_todedomerot.pdfIn PDF document text
    • https://giwirakixa.weebly.com/uploads/1/3/3/9/133999144/gupijo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f88496499161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454822/normal_5fad20a05d13d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d1a9ec-720d-4eff-af0f-538f67221416/certificado_medico_cruz_roja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed3427d-70a2-4716-9fac-df27fd7754a2/toyota_camry_sun_visor_recall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eed4cb4-68a9-4650-b0a5-6be567a63ef8/17660059694.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/20364117930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a857ef64-daf3-4a02-965d-5d18de222978/venogivakabolun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc228345-3c6d-4fa0-907b-d182b1d72829/madoximume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e04a9e9-db67-48e4-bfb0-3814036982fc/fundamentals_of_financial_accounting_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39E 5224 bytes
SHA-256: 6cc615d8860c1871b4d786d3beb3e14ce5575d4fc8642b143710e744cd585adf
font_01_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 10076 bytes
SHA-256: ce7e54c4aaed5af6833257a79c5dafd7dfb723a550f681e4c593c5a6a6b1464b

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