Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e9e13112456ea2…

MALICIOUS

PDF

65.8 KB Created: 2021-02-14 04:21:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 09467438e9b7db13c0b535fcea01e836 SHA-1: 0614e589b4e8941665ba798cbd5bebbe379f3c81 SHA-256: 96e9e13112456ea2bb1f5367b52160e844903e42a6c4ee680f766ee9b8560b17
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wix?keyword=death+battle+reaction+wattpad PDF link annotation
    • https://mutuwafidiz.weebly.com/uploads/1/3/6/0/136095616/zijiloxila.pdfIn PDF document text
    • http://xexejidabame.22web.org/42787990765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470223/normal_5fc7016c56e2e.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/XWdicij/mighty_battles_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/iidPijC/49087411768.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/NhdidEQ/superhry_monkey_go_happy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_6010cd9660c24.pdfIn PDF document text
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/7580704.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/gjZSrKv/13060285367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_601e2bad2ff8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421213/normal_5fc56d468fea6.pdfIn PDF document text
    • http://wigojomet.22web.org/cooking_academy_4_free_full_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vubixegigag.rf.gd/exposure_triangle_cheat_sheet.pdfIn PDF document text
    • http://tuxijug.rf.gd/atrial_fibrillation_guidelines_2018.pdfIn PDF document text
    • http://tinodaxaxaduj.rf.gd/medical_certificate_format_for_paternity_leave_kerala.pdfIn PDF document text
    • http://ralipuzejemozuz.epizy.com/safazulukurezijunixused.pdfIn PDF document text
    • http://bibosisiv.epizy.com/tevig.pdfIn PDF document text
    • http://banitazivi.epizy.com/94211267759.pdfIn PDF document text
    • http://sametil.epizy.com/california_dreamin_lyrics.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_off0000c6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C1 5212 bytes
SHA-256: 5badc52a61648c1f6cf3d5cb909043bfc5aef87b64bbbb2f9d4d6e16ddc25a3f
font_01_sfnt_off0000d887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD887 9868 bytes
SHA-256: 2ac7c5eec5ba623785a5d541a8b0888ead7886ef135b82ad42602a5f1b3da606

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