Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de408dbdbafcf68…

MALICIOUS

PDF

66.1 KB Created: 2020-11-09 18:05:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cbf729e948fa174bff69493a3f4a96b2 SHA-1: a175a3e28d8d6d634e998903344910b8533c4d1b SHA-256: 3de408dbdbafcf688221214eebc25e55bb095d4e7627719b9e94f40198189e24
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 0.9998

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://trafficel.ru/aws?keyword=free+robux+if+you+join+group PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f87ff9c4bf14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f95cf12a00cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385030/normal_5f8f5605ded20.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/fasanag/burst_skill_tsum_tsum_score_bubble.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb847374-002a-4555-943a-3418963c6cf8/2002_lexus_ls430_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/88301454854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff0ab1c-12f9-43b5-a4a4-dbefd02e456e/dapujomizan.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/44883721928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab91e7ee-15aa-4926-badf-f2534929f396/73697897910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aed3b15-b1aa-4a55-b6e9-4a1f5d69aef3/85498008154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0212b121-bf0f-4620-9469-2ff830441c83/the_paper_bag_princess_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/rugid.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/bhagavad_gita_kannada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0a97044-b1f1-423e-928f-55833f0aba20/shoebox_pinhole_eclipse_viewer.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_off0000c82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82D 4992 bytes
SHA-256: 3a296a8bfb36b35f49a4a79492798c6bdf23d393292f06617311616f862b72d7
font_01_sfnt_off0000d953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD953 10172 bytes
SHA-256: 52a6ccd6fbab6e769ece98c792815fdf4c186eb1ee404c59c0cd1154c894137a