Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aded32f0ee58a50…

MALICIOUS

PDF

95.5 KB Created: 2021-03-18 01:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 46f47678e06be85d97baa3e68bf67ad4 SHA-1: 96573a12162067601e19c4dbe1696ddebeab38ba SHA-256: 0aded32f0ee58a50b3180f7362b1ae84358ae16e2d72b9ac031771594fd6eb25
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://soxebez.ru/wix?keyword=inner+loop+vs+outer+loop+galapagos PDF link annotation
    • http://mynasert.online/kunewiponefalemulamatadun6kpgs.pdfIn PDF document text
    • http://sutonazijusi.iblogger.org/happier_marshmello_sheet_music_flute.pdfIn PDF document text
    • http://simkosa.website/sukozojogikopasolovemapekk679.pdfIn PDF document text
    • http://tuvuvadirozo.iblogger.org/89461825026.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://ee809a51-a58d-41df-a269-13688c4e1c69.filesusr.com/ugd/5f587b_b41c3139a4e340b685d66717ffa4a8a1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gapivegek/healthcare_business_informatics_salary_in_nc.pdfIn PDF document text
    • http://fixelelediv.epizy.com/jobawemupe.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/soft_ambient_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e6dd111-dfab-4df8-81b9-fd857ae4ac96/vupadekegixodetuxujenegu.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_3334f985366141de8fcad30b2a20eef8.pdf?index=trueIn PDF document text
    • http://nerakovunimi.epizy.com/70620001706.pdfIn PDF document text
    • http://lasarogime.rf.gd/mind_power_subliminals_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4394b322-8daf-4c99-bdf0-92cc44fc1494/luniwokenawetodipor.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/dokidurudimajiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4876a8db-3a0b-4efd-b1bb-0408e232df42/zimif.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_off00012b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B40 4816 bytes
SHA-256: 3a818ec44efc9d0814f9bfc740a68b28db02f93fa166de3e75ca3edbaf864626
font_01_sfnt_off00013baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BAF 11516 bytes
SHA-256: cedfcec29ecffa743accfb02a7badd4f023a807f9c0a27d407730f5660cac182
font_02_sfnt_off000162e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162E5 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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