Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aea5df17005ff64…

MALICIOUS

PDF

76.3 KB Created: 2021-02-17 11:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 66ad5fb56d9201f74de67e1e89fa01e6 SHA-1: 27d715292c2bf6f2e171916d8659c588da07e8d1 SHA-256: 0aea5df17005ff64e2397ce3b600506a5fb688072580a8fc9a0aae324f3dfad5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a prominent one leading to 'jottigo.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a 'Honda civic lease $59' lure, reinforcing the phishing pretext.

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://jottigo.ru/strik?utm_term=honda+civic+lease+%252459 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467019/normal_602575d10f1f3.pdfIn PDF document text
    • http://fastpysystem.online/vobivudofuxenedipubanogajeofby.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451369/normal_6007642d561f1.pdfIn PDF document text
    • http://puwonasomoso.22web.org/travel_requisition_form_template_excel.pdfIn PDF document text
    • https://badetujunomut.weebly.com/uploads/1/3/1/8/131857650/74cd5ee1b4d36.pdfIn PDF document text
    • http://edarudost.online/manual_lymphatic_drainage_breast_cancerkoctm.pdfIn PDF document text
    • http://mamajan.space/71110366556a50cb.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/vipevimejojometefujutixozt3lhv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_6013e664375d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394066/normal_600861293badc.pdfIn PDF document text
    • http://vbnmcxz.xyz/ac_armature_winding0rzzn.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
    • http://wasalesex.epizy.com/mekoxidazebotagatetubadin.pdfIn PDF document text
    • http://fukesok.rf.gd/11917332641.pdfIn PDF document text
    • http://xevivalekivo.epizy.com/lowepro_format_140_dslr_camera_bag.pdfIn PDF document text
    • http://sozazavore.rf.gd/58052242095.pdfIn PDF document text
    • http://vezigaje.epizy.com/51558489524.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_off0000e07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07E 5084 bytes
SHA-256: 1c0479ed10f1832313afa48f9df9645f4d228dc3e413d36cd157071a6a7336dd
font_01_sfnt_off0000f1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D6 10704 bytes
SHA-256: 0c43d22efd339a08d45e16e1d5667f4803d369a4166b25ab44e3aaf9943d5492
font_02_sfnt_off0001167b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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