Malicious PDF — malware analysis report

Static analysis result for SHA-256 0965dd53c8f83060…

MALICIOUS

PDF

67.7 KB Created: 2020-11-09 19:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cc332dbfc914b8211ac12592570d28b5 SHA-1: d07522c5c47512fa91c4f4dcd08556ef375d21df SHA-256: 0965dd53c8f83060e21e3a7f89b2f0dfaedfcb541a67d850af3daa1f2240fb96
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/strik?keyword=bike+race+free+top+apk In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a8e473-ef0f-429f-b275-81f3a40f0601/limepixokot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64130ef9-8b2a-4d06-9679-88c993e24ce2/zavevekezurinodof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baa5bd7d-9cc9-489e-92b6-54707c6eaed9/guitar_hero_live_download_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3133719-0c4a-422a-a339-9878c9d39286/37162502351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74570f30-16d5-4b8e-9d67-9448ec057c7d/botibile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4da83941-5c45-4334-9017-63f1b14e63ef/44897924340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c99a60-0a2b-44c6-90bb-dc4622ffda95/bukubumabofolotopudori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4202fcbb-8876-4ae0-af1a-1c2a53b7690a/damajisabufoxaxelodun.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/5837874063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd97ef30-a57f-42fc-a4a5-04b93e5ed349/luluwutuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/roblox_banned_account_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46bff924-af56-44b9-9e14-155fd3779db4/gisebexaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de715545-9053-43df-827a-84ec90922e96/xotabibijafiw.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/41334207621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/031f1898-769b-4889-94c1-f3aee5857d7a/xosuwodelexaseredo.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_off0000ccc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC8 4912 bytes
SHA-256: 757559c507380a0b4775c58c2a4db59e557cb6a7bd37a9cb9a654b7c5585b9dc
font_01_sfnt_off0000dd9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9B 10832 bytes
SHA-256: 9cb13354725504f549565416b9984e48ce18d5aca5f1bb4c6a41c0d47afb678d

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