Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c02ac13db4a481…

MALICIOUS

PDF

74.2 KB Created: 2021-02-15 17:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 19620e25d9b001806d023d0205ebb071 SHA-1: 762b95d2cf7cb0fefe669d49868ad9664936d60e SHA-256: 41c02ac13db4a48143c48cfcefe0b44d6be2e3d4769712146b7590c5f47a9a9c
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/123?utm_term=formas+de+expresion+oral+ejemplos PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470545/normal_5ffb49be5c46c.pdfIn PDF document text
    • https://cdn.sqhk.co/zavipudajose/4iinLjb/57818663172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501360/normal_5fcad78ba3644.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/T9jlide/goodreads_quotes_true_love.pdfIn PDF document text
    • http://islemleriniz.org/viparigerugonujejixavop20xpu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482216/normal_5fc5b36086af4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6029fa41a2af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_6029d862d3051.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/gNhcMks/scontro_di_titani_streaming_ita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jipudovisubu.rf.gd/fairy_tales_in_tamil_video.pdfIn PDF document text
    • http://silirik.rf.gd/17863310399.pdfIn PDF document text
    • http://zezatavaveb.epizy.com/rotuvejotijiwozozuka.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_off0000e048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE048 5204 bytes
SHA-256: d250beec5fc8f987c96a7dd2c255ce09ca875d8b4b63267d95302e01a178dbd2
font_01_sfnt_off0000f1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E8 12444 bytes
SHA-256: a0fb143faec110049da7c9366a2deda8112ada0717643cb94400b13a4f42e8c6

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