Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b47ca1964456530…

MALICIOUS

PDF

73.9 KB Created: 2021-03-01 18:46:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e0d5190000ddf9ef42e20b893560b2dd SHA-1: 2a67b1fe8f79c93fb8506b93982a60ab3c6a1554 SHA-256: 6b47ca1964456530825fceefbaf2856f1f6e74b1a1de686807cf81698a604991
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://mezovuduw.ru/award?keyword=free+descriptive+writing+graphic+organizer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446650/normal_5fe26a432c247.pdfIn PDF document text
    • http://nipodek.22web.org/nero_cd_dvd_burner_software_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408321/normal_5fdd22ecea626.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/eJigjb2/zegavibokakadek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369306/normal_60027ec3490ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_5fdb8aefb3d58.pdfIn PDF document text
    • http://maxapur.22web.org/online_bunker_platform.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/gewisetug/instagram_stories_hd_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/zamugin.pdfIn PDF document text
    • http://rowesotinik.rf.gd/29431026200.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/5367257403.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/litajowuwedo.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/71611026206.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/eclipse_rcp_free.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_off0000e4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C5 5460 bytes
SHA-256: 8a02c9fbe363f0d8644686149474ba5315a6a02054b3ed8a4761f0fbca996b5c
font_01_sfnt_off0000f778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF778 10184 bytes
SHA-256: 98482f7b19a17bd504378d2454edb68f29607be6120ccacf2c3dab3b5e49c440