Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92578dfc8e1ffe0…

MALICIOUS

PDF

67.0 KB Created: 2020-11-25 02:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 037c0250d913b2d2cf796e19ec48d746 SHA-1: d113adbcbf83702a8955995aefa2d67a250b51c2 SHA-256: a92578dfc8e1ffe02b05181839b2ff4beca901ae0569d99b661791cd26559f1f
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://traffset.ru/strik?utm_term=nappa+dragon+ball+z+kakarot PDF link annotation
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/f78be.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/wadulami.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f874a14a4067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f98e30882c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403118/normal_5fa3129094dd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_5faaec63a533a.pdfIn PDF document text
    • https://zuzilenew.weebly.com/uploads/1/3/4/5/134527977/fitigi_sajitog_marojewomeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393515/normal_5f9c33de5c213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f94dcf13b707.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/lepusoz_doxuvufufebese_dasovoxulumu_texemukivuzir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444096/normal_5fb9fd8d1ac88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ca6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6C 5172 bytes
SHA-256: a1cb7864297e95e0507f014a51b1da2e95e9a098d1f20f8bd798385b5aa02133
font_01_sfnt_off0000dc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC19 10472 bytes
SHA-256: 9734026c36beae9b00f31474d59822bfcd5c434081a889059db035cdc31e01bd

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