Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ac44fecfbb88f6…

MALICIOUS

PDF

73.1 KB Created: 2021-05-19 11:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09c912d77459a094532ecfdbfaab258d SHA-1: 9f0f8dd4a67b9bb19938c2c122c26480348d606b SHA-256: f0ac44fecfbb88f68dc2c5e26406775bbf181b4f815b687a8aed49595a571db7
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 0.9996

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://mezovuduw.ru/strik?utm_term=forest+management+act+of+1897 PDF link annotation
    • https://pujakopevu.weebly.com/uploads/1/3/2/6/132682627/1329514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485308/normal_5fc60789704cd.pdfIn PDF document text
    • https://kuxilididid.weebly.com/uploads/1/3/4/3/134387830/2105606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468563/normal_60292aa37ab5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_605918d01e44d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370284/normal_5fe55106626ec.pdfIn PDF document text
    • https://masumekufopig.weebly.com/uploads/1/3/4/5/134577820/4841950.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449392/normal_60055209dfeaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_6047196abdbd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460255/normal_5ff32ea05756f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_60584c198fea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403271/normal_602408b9d0257.pdfIn PDF document text
    • https://bibokesoxi.weebly.com/uploads/1/3/4/8/134850131/kexubifi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503309/normal_5ff1e592ac035.pdfIn PDF document text
    • https://fotawadibegul.weebly.com/uploads/1/3/1/1/131163643/5c132.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/a53796f8-f385-4dcb-ade4-27712ba2af8e/xojow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6b44778-ce68-4922-ad06-ed081d57cf35/cdigo_penal_de_puerto_rico_2004.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/wojakivumeru.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/julejewefububanugugupi.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/does_potassium_nitrate_incorporate_ionic_bonding.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/85457786143.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_off0000e0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A0 5604 bytes
SHA-256: 520a48638f1a63bd303a4624f9a0138e62929c3b144052f1cf3baef7e611023e
font_01_sfnt_off0000f3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A8 10416 bytes
SHA-256: 2e23861ee2e09ebcfc6975bbd976c60e8e6feae952d095a7363448eba96374c1

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