Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fde7f7d15fb7ef…

MALICIOUS

PDF

65.2 KB Created: 2020-12-28 16:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f94e8a45faba4d270330b456163a43af SHA-1: 1686eaf6fa04058406f84354d2c8c712ebb22fd2 SHA-256: f9fde7f7d15fb7ef8785f7925f0a8f2f8449fe062843bd201d7f3c8efb95ab44
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting 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://trafftec.ru/strik?utm_term=pokemon+wallpapers+greninja PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388827/normal_5f91954b3a45f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5faee3865f66d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484364/normal_5fe143da45148.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449599/normal_5fcf9e98a8c75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392873/normal_5fe1715cb94fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_5f9891dd11fa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447086/normal_5faef70de8787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389394/normal_5fa0f3c2dc31a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f9ff5b3bd8fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_5fc206f4ee20c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453889/normal_5fe891d06edfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444885/normal_5fddb32a01877.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/regovadeje/furudelalarof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24310c99-5927-43ef-8207-fc2ba09e7f91/nakepuxaveve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb39afe3-6d78-4a3c-93de-7e9a620e0d17/16225321523.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_off0000c237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC237 5372 bytes
SHA-256: a9ae9c560d59379c82e8b6c5f66e79512a10ffda5af178dafcfd7ce556d03cd8
font_01_sfnt_off0000d481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD481 10808 bytes
SHA-256: fb09ac9dd6146ff3099263dc0fcee3d0f5ba21120e93b24a918952fb4e1a19dc

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