Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f910a7b9d0ad76e…

MALICIOUS

PDF

72.0 KB Created: 2020-11-10 23:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6bc71f5907abfe8e4a0cc0b9f8ca3371 SHA-1: 298b81e44de25ccae1efea53ae40e6018f3538e8 SHA-256: 7f910a7b9d0ad76ed62ca0cb5d4f3c4ffe6bce5dba5b7d8595525703d11c9462
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 0.9997

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
  • 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://traffmen.ru/strik?keyword=acer+aspire+5+slim+laptop+15.6+best+buy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f944c7873044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_5fa1fa2b19ce9.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/juzowilipi/86875596220.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/eoc_study_guide_western_frontier.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/business_success_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/vewikak.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/ruwutumozoxusogog.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/10417329176.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/cost_accounting_notes_for_b._com_2nd_year_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2720919d-3bd8-40c5-b67a-723a3b52b23b/ranajogujikipodopizoze.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/36592336405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6363d30a-32e0-45d6-b75b-41ee5584e2ae/dynex_32_inch_tv_wall_mount.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/kindle_paperwhite_manual.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_off0000dc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC38 5672 bytes
SHA-256: 63b5d3d6ed615807abb86da50f303ad73b7e902113c3a9e458a2667f9e5f228e
font_01_sfnt_off0000ef82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF82 10416 bytes
SHA-256: dd5da1d78fe330bb493cb75eced52a749101ea8d4bdbcf1d4ab8ced88f8f2451

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