Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38012bfc2ade6cb…

MALICIOUS

PDF

77.6 KB Created: 2021-05-26 04:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 62c056dfd78dfb070e9cbe7f93e63a8f SHA-1: 57af71d49ca401a0b39add1b127fb94e20615d3d SHA-256: c38012bfc2ade6cbfb4b94ef7b3d67f9e353b4049eb34ee5c75726fda07b0b68
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://leonvi.ru/strik?utm_term=what+is+behavioral+theory+of+leadership PDF link annotation
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/be1ab691de.pdfIn PDF document text
    • https://fuvetozexogix.weebly.com/uploads/1/3/0/8/130874326/sofabubipudof.pdfIn PDF document text
    • https://linowatudevenur.weebly.com/uploads/1/3/4/5/134599813/5055138.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/vivifazusorez.pdfIn PDF document text
    • https://muwujexowosis.weebly.com/uploads/1/3/1/4/131437891/goruvugipube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481064/normal_603120a2cf8b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453117/normal_60247abaeb572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5fe9203d2cffe.pdfIn PDF document text
    • https://kadimonadi.weebly.com/uploads/1/3/4/4/134491006/torewotaterud-wuguku.pdfIn PDF document text
    • https://pufizemopuvagup.weebly.com/uploads/1/3/1/4/131407511/wajuwopaxurok-bepevepagarit-merogilovob-famiduxepevu.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/sojaxub/88101985708.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/multilingual_websites_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/uc_browser_vpn_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/detailed_map_of_vietnam.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/76672545668.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/xegigekugaxowaf.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/american_chemical_society_citation_format.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_off0000f275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF275 5444 bytes
SHA-256: 967797054e459628c05db7fcf4bf29f9513fe3537ac997cdf466d5f7f345d289
font_01_sfnt_off00010506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10506 10672 bytes
SHA-256: be9ba12b8e734f79c118c70fd21d65ef4918754c79209a7adb71f4bf2448540f

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