Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02572bc57667bb7…

MALICIOUS

PDF

76.6 KB Created: 2020-11-22 05:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 872413c881cb296ab54ad70630a520ae SHA-1: d1914062b1a2856a85bc0212627d767bd8ad37eb SHA-256: f02572bc57667bb7a7866b0ac2d2c0c4384c1c3a17826d57617fdf718b4e64ed
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 0.9997

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=teoria+de+las+placas+tectonicas+resumen+corto PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447280/normal_5fb53c2541295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5fa5d8d3bf74d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5fad43aa80de3.pdfIn PDF document text
    • https://dapemoko.weebly.com/uploads/1/3/4/6/134647299/6620474.pdfIn PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/a1a643aa295e90d.pdfIn PDF document text
    • https://bubudatitiga.weebly.com/uploads/1/3/4/3/134308982/kopiri.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/8d5f6f11.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/nisoxow/bvg_company_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/que_es_aprender_a_aprender.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bea6ec6-9f12-4caa-afb2-064df17d6b29/zwiebelsaeckchen_bei_ohrenschmerzen.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_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 5168 bytes
SHA-256: b2d2f1d9406b5ed513cbcab0b3da36ea664f376d8f04400f24f43fba2d0d0a50
font_01_sfnt_off0000fdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 11620 bytes
SHA-256: e6fa22e254e712c1d5a0b01adcd96c02d209432638e2f9453dfa864a162e0375

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