Malicious PDF — malware analysis report

Static analysis result for SHA-256 60030409aae79e35…

MALICIOUS

PDF

78.6 KB Created: 2021-03-25 13:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 67618eeb57fe1795906da2c11945f054 SHA-1: 228e14d1ef91de5859bda456e84956b89361d5db SHA-256: 60030409aae79e354e5010e784e06b7696b6ec671df0c7d25c6c0eb8d504a27b
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be related to firmware searches, suggesting a phishing or malware distribution lure. The presence of multiple external URIs, including one pointing to 'jacksth.ru', indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=netgear+wndr3700+alternative+firmware PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495855/normal_5fcd74c477c9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489411/normal_5ff31e484de5a.pdfIn PDF document text
    • http://rufawefojag.sportsontheweb.net/5571522721.pdfIn PDF document text
    • https://cdn.sqhk.co/xumefotebe/1N5JozS/funny_exam_status_for_whatsapp_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/bowevuva/dBoieT0/tojinobapi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413368/normal_5fc731e77a653.pdfIn PDF document text
    • http://verifiedbadges-form.com/maximum_normal_stress_theory_is_used_forcdw46.pdfIn PDF document text
    • https://cdn.sqhk.co/loxinesupiva/gfijghU/sugute.pdfIn PDF document text
    • http://scrlt.xyz/gujuzarl7ro3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476270/normal_602f2e7c44d15.pdfIn PDF document text
    • https://cdn.sqhk.co/kevapaboxer/hVOOEjh/jibuvibozud.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/jejfibf/spiral_fracture_of_femoral_shaft.pdfIn PDF document text
    • http://meinekarten.best/independence_day_speech_in_english_for_school_students_2017zneo1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9580203f-44f2-4994-b81d-9c67302a85f7/27901297708.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/73725568826.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/free_telugu_audio_songs_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/grade_8_math_order_of_operations_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8c2483-6f14-4eb5-a291-f26f1aa0a5c2/pawaketusadefamefasominot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b080148c-bc28-4446-bf62-7630f7acebfd/80423303181.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/ejemplo_de_cadena_de_suministro_de_coca_cola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02182a11-171b-4c1f-985a-aec6d13c5f9b/86779020873.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_off0000f3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B3 5556 bytes
SHA-256: 0c452760e37199cd58127e2fe5b578839a9fe7fabeec29c4dff008d5128520dc
font_01_sfnt_off000106b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B3 11236 bytes
SHA-256: 74b3da8cbf57105609d03fa8f2f8754ffed338fa039bd2028259e89801d71f90

Open this report in the interactive analyzer, or submit your own file for analysis.