Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca24be875c012d65…

MALICIOUS

PDF

72.6 KB Created: 2021-01-01 00:28:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c8df21d3c75ecf512ad822ef237a34ff SHA-1: b094a17d3eb4ba525c6381abeaf4bc2894d28def SHA-256: ca24be875c012d6580fa135f05daaf16767f0a8f83e1ccd2e8ba033879d7dced
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 0.9997

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://traffnew.ru/123?utm_term=bose+acoustimass+6+series+iii+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447447/normal_5faf0e75c7d5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428038/normal_5f99dc82904a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393916/normal_5fe28bb357d99.pdfIn PDF document text
    • https://cdn.sqhk.co/lilanoto/KtjfgiK/youtube_vr_not_working_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fc6bb4bc7614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_5fbb56e345840.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369152/normal_5fc835fb7dc96.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/tuxutedi/class_10_biology_chapter_2_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/limited_wish_quest.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/invertebrata_dan_vertebrata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5719f5-de5b-448e-860f-c296e61db718/20870792686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/955f6b60-747e-4ecb-8ae4-b9c7af0a5bbf/16299758101.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_off0000df2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5268 bytes
SHA-256: 090c24b6492c3a8e935098d234a87a95610df80b13c3d246d7b8036ed571726c
font_01_sfnt_off0000f10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10F 10808 bytes
SHA-256: 2185f6eec94f889311e7af9a3f8b2eecb3b997fd1ca287aed3c5973a31eed98c