Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c3f5c391693ebd…

MALICIOUS

PDF

87.7 KB Created: 2020-12-18 15:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3a560eecdce1c31fc64dedcd8ec382e8 SHA-1: 8ed3cac47a03b2bf0f5925c2290fcddc7eb09ed8 SHA-256: 54c3f5c391693ebdf6c29e9ca91edbd8a694db3de70a02d7a104191624ba6d1b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting the document is designed to redirect the user to a malicious site.

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://traffnew.ru/strik?utm_term=beatnik+slang+meaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481173/normal_5fc79a720421e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384480/normal_5f8c0a69e7fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427828/normal_5fbf5d02938ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd027f1491241adc466969/1606222464627/hrm_531_week_4_knowledge_check.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce1510f32955146e0eafe8/t/5fceae5f0d4311364641b2eb/1607380579928/segebovusosefuzonojixirux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814313e6-b215-458a-9f4a-508d30385db8/85277632771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace5f210-3ad9-4418-a029-4670fa74060b/fufovoludetiwodizazeja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3b7d50a2757459bf48cbe/t/5fce74b84c5d49651cedb422/1607365817349/hydro_dipping_guns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e4def98-33ee-49b3-9d97-46cd49b32863/watifipojalapedux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d26e14f6-247e-4c94-9902-28914b461b95/77644992986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99efd0f4-3e4b-41ff-852e-a601994facc4/morkie_puppies_for_sale_in_hickory_nc.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_off000119cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CF 5024 bytes
SHA-256: 3fdd06f9e97a5e61a3911ea2c834f297bd619babb90a4240fc6deb5d184c5ae9
font_01_sfnt_off00012ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADA 11124 bytes
SHA-256: e911e1ea47184133c7ddf751c9cee7682925dbdabe4da023abb1a535be44ef9f