Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40a80f94762ca8d…

MALICIOUS

PDF

69.8 KB Created: 2021-01-23 15:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b80706f4da9926635dc4f1ffc5851b4e SHA-1: b9fdb2021d805d90ae3e0cfe79e53db7b443a6dd SHA-256: d40a80f94762ca8d779669b09ad587f43d0fdb7b0ba722b45f8e22fecfcdbff7
126 Risk Score

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://druttle.ru/123?utm_term=new+year+2016+live+wallpaper PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422367/normal_5fda07b014055.pdfIn PDF document text
    • https://site-1172860.mozfiles.com/files/1172860/nidetubila.pdfIn PDF document text
    • https://site-1168352.mozfiles.com/files/1168352/34913558193.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486778/normal_5ff1ae26ae580.pdfIn PDF document text
    • https://site-1168215.mozfiles.com/files/1168215/top_100_pop_music_2018.pdfIn PDF document text
    • https://site-1173894.mozfiles.com/files/1173894/potevivumeruxapo.pdfIn PDF document text
    • https://site-1257619.mozfiles.com/files/1257619/listening_test_1_crime_report_form.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/TSHSa8N/coffin_shaped_nails_black_and_silver.pdfIn PDF document text
    • https://site-1173572.mozfiles.com/files/1173572/wozotananabode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401972/normal_5fd987eac2413.pdfIn PDF document text
    • https://cdn.sqhk.co/jakovenuz/igjaDQz/lubonowapejofukefigoxapaw.pdfIn PDF document text
    • http://nokirixako.iblogger.org/business_plan_for_restaurant_and_bar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502248/normal_5fd378e78609d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozijirume.rf.gd/top_android_mod_apks.pdfIn PDF document text
    • http://pupovedifa.rf.gd/android_tv_sony_bravia_forum.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_off0000d3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B2 5336 bytes
SHA-256: 678a58df0d451bd6b486c48413348fb922099bab96e4e09ea5f012ce3d6e58bd
font_01_sfnt_off0000e60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60D 11092 bytes
SHA-256: 6426a82bd40c0f2529015a934d2400d587716c3d83ab869e0aa5fc5af3b3776d