Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd020d8eb38df6d1…

MALICIOUS

PDF

72.5 KB Created: 2020-11-17 01:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5c210f5ca3d6f6fd94808d37339df09a SHA-1: 97d0827a4ea822260ada414df2c3d85fff99cacd SHA-256: dd020d8eb38df6d10caa576009edf4a0a1b1359e9a5f4b3f72b1ec5fb0fd2c8d
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-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://traffking.ru/123?utm_term=wayfarer%2527s+guide+to+eberron+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f8a03ef96b2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f93378d7269b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5fae4e9ced144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f934c738cf99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392444/normal_5f9283dd99d6b.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/tetazino/40960557359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5603517c-dc28-49a9-94be-aa22c70fe25e/rosujuzezipawopuzixefiru.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/compass_exam_secrets_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/volkswagen_ethics_scandal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6411ad-4825-4f0b-821d-7cfa97eb7e12/zarixujaxiwob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4932803-341a-4de0-bf4c-6b33d06652f4/vevewiwewapezigubasume.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/zajilux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc2624c-8566-407e-bd9e-21cce630a07f/zesitezexi.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_off0000dd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 5468 bytes
SHA-256: e8077a048202872b7d0056bdddecb9f403a75a1988af520bf1b148451897e008
font_01_sfnt_off0000f008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF008 10852 bytes
SHA-256: 6dca2f0e8a2a717c22620bad1683732064b5f03e2665bef08f6415824fb362d6

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