Malicious PDF — malware analysis report

Static analysis result for SHA-256 916cb9ee806b915b…

MALICIOUS

PDF

66.9 KB Created: 2021-01-13 07:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e58a487d51a13cadae4361c8594fad74 SHA-1: e795d8d01647c022b495d23f9960f6be1eb5cbae SHA-256: 916cb9ee806b915b7b2145606de337e9945ed447ba1d6095c6ee74905fe2b357
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

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://traffset.ru/123?utm_term=los+continentes+del+mundo+en+ingles PDF link annotation
    • https://cdn.sqhk.co/vuguvorexi/hhdiigd/99065487787.pdfIn PDF document text
    • https://site-1177296.mozfiles.com/files/1177296/16506974746.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5fe6b9479ef3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f87385406c97.pdfIn PDF document text
    • https://site-1235125.mozfiles.com/files/1235125/video_editor_freelance_website.pdfIn PDF document text
    • https://site-1174928.mozfiles.com/files/1174928/34567243159.pdfIn PDF document text
    • https://site-1166675.mozfiles.com/files/1166675/mipav.pdfIn PDF document text
    • https://site-1177817.mozfiles.com/files/1177817/fifa_world_cup_replica_trophy.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/ih9uqij/kewawaletepubedupalafow.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/muvazi/64296666870.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/what_area_code_is_908_in_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/the_poet_series_by_michael_connelly.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/67839971571.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/chunks_malayalam_full_movie_free_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/alcanos_propiedades_quimicas.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/97307152199.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_off0000c64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64F 4896 bytes
SHA-256: c4d4ad805c34a02e7a03712e1ddd1b343b7cef6cd6b5f6e31843c483791616c7
font_01_sfnt_off0000d6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E9 11576 bytes
SHA-256: f91d89fbf15940c71473e45a7205ad0e47a4d94c31e5b330364f083b9a1baaa0

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