Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1eb5e441b92b72c…

MALICIOUS

PDF

145.1 KB Created: 2020-11-24 03:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2d38d85befb514b9289172daf689ead1 SHA-1: d82850c4eba15ffd1424fd0bd463a9f468d77a4f SHA-256: d1eb5e441b92b72c8e35a1146412c9100fca407d0e58306252d85299cfc6e15c
96 Risk Score

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 0.9996

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://trafffe.ru/strik?utm_term=4.+08+selecciones+el+premio+nobel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f89a92128e82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f87010a57de6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455672/normal_5fad29cd62ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_5f8b98b51e6aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f99170e69b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f8c73c5d3f2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5f96a30d3f572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5fb295d75ec01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5fb72047baaae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_5f90a3477d673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_5fbc6514926f5.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/vuxalirudidel/short_action_movies_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/fovufax.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/wusemulidegigogewiwutifi.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
    • http://scripts.sil.orgIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0D2 5372 bytes
SHA-256: 59043a9ad48c7e0a0551e321e51077d6cc540b3b091f51f8b812d4f501cd63b4
font_01_sfnt_off0001f307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F307 13884 bytes
SHA-256: 6d19ff8968a6afa4ac5ef2abe56380c911292dcca99f1319612ffd45c19a24af
font_02_sfnt_off00021eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21EEF 7144 bytes
SHA-256: ce7010445987614423d69aab380eb3287670b4e03528ae43a9610002baf7144e