Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c830145e2a2bde…

MALICIOUS

PDF

110.4 KB Created: 2021-02-27 03:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0c33f96ddf9a22ea38ca662a32218956 SHA-1: 3bfc4ef1fb1f355ed3bce8ea91bc3f226143f01b SHA-256: 44c830145e2a2bdefdff1167cfc74d92b320040afbc99bd3c418909a4e95b6c0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was identified as malicious by a machine learning classifier and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=kenmore+elite+smartheat+quiet+pak+9+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457862/normal_601063b57f676.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/iiaFlYa/84704550430.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367680/normal_5fca33b182298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384296/normal_5ff8c32024b65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410431/normal_5fcb2f6656775.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/TjcsWHZ/zedge_app_for_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_5feaedc7b28d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5fd896b487eb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_60253ab819eb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_5fc7a739d64e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_6029958ff3737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409811/normal_60318ae2a1170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_600ea5cf08d0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454681/normal_600b9996242c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girofili.myartsonline.com/gegomibizukunonovazufaz.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000172e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172E6 5488 bytes
SHA-256: 808a9b22b98c8f305d1723b3e7953c21f0570a70897ab2f48cf6b5af36137b6d
font_01_sfnt_off00018561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18561 11508 bytes
SHA-256: f0864810a2f895b09cdc2030732cf5a26aa23c0435004f8cbb5e1e2fb469f07a

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