Malicious PDF — malware analysis report

Static analysis result for SHA-256 150365dbd794b46e…

MALICIOUS

PDF

86.2 KB Created: 2021-03-18 09:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 84896ac9a6193b7342e69cdb7a8d00c0 SHA-1: 22023d522052ba911551317f988d7e97535f10d1 SHA-256: 150365dbd794b46ea9ff13fcbd75cf738aac5f50ec51df8bb2cd30f8b9ce8cae
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and a specific URL that appears to be a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via the embedded links. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=does+james+allen+use+real+diamonds PDF link annotation
    • http://shlifovka-pol.website/dovavaxepatojaj79y5d.pdfIn PDF document text
    • http://rocketdocs.us/95454802165caee1.pdfIn PDF document text
    • http://academic-club.ru/jixinomavefiseqpnwd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370744/normal_5ff53c35c3aed.pdfIn PDF document text
    • http://navaram.online/jiribulufupupesedqnr4i.pdfIn PDF document text
    • http://walkover.me/sololearn_javascript_answersxqrsp.pdfIn PDF document text
    • http://jesofafisozosa.iblogger.org/9419076544.pdfIn PDF document text
    • http://kukushpa.fun/baby_trend_sit_and_stand_stroller_how_to_openjq1uo.pdfIn PDF document text
    • http://matcobzor.ru/ragataxaxuvagm5xww.pdfIn PDF document text
    • http://coloradocustomelectric.com/captivating_book_meaningthqam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493569/normal_5fe1d1e426a5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403130/normal_604accbac5d2f.pdfIn PDF document text
    • http://nubolutlion.xyz/98526923797ub039.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7fe06ba2-c39b-4a47-acbc-d7be3191ab8d/54486958514.pdfIn PDF document text
    • http://kunasajijujaf.rf.gd/cordell_connect_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de14ee6c-06d0-4357-bcc2-890a8a456413/smartio_fast_file_transfer_app_for_android.pdfIn PDF document text
    • http://fumojaj.epizy.com/6703962848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3b207e-460e-4038-b961-42d257786f77/28147766676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d48179e-96e6-4489-8fbc-12711eb0cb1f/28624261976.pdfIn PDF document text
    • http://demunoj.epizy.com/blank_answer_sheet_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae4d0f4c-f3f4-4047-850c-f96413774287/sodisufatater.pdfIn PDF document text
    • http://tadukaxuzevida.epizy.com/zazetajaligan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10561 4848 bytes
SHA-256: e64064daf9a3b6ff5202010747c9498d25e9cff751e88e904ed5d85c913408bd
font_01_sfnt_off000115b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B6 11732 bytes
SHA-256: 1bc389cbe2498873307580809096a7a9fce67b597dee5144df9e662b1122bf9b
font_02_sfnt_off00013d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D3D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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