Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c4a7b24ed6c250…

MALICIOUS

PDF

73.1 KB Created: 2021-02-21 17:31:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 583280f64994b0e605fcd6176d5c05ab SHA-1: 70d2a8b5c7871f5caa43cef471372ae06d9a19f5 SHA-256: 89c4a7b24ed6c250ecf456fc855b8150e2b7ef011057f6a8d0c63c1a21c8b447
126 Risk Score

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://jottigo.ru/wix?keyword=lg+washer+wm2016cw+repair+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405946/normal_6022877fa1ea6.pdfIn PDF document text
    • http://chategratis.online/conflict_resolution_activities_for_elementary_studentsbxzys.pdfIn PDF document text
    • http://top-shop-store.website/dell_latitude_e7450_i5_5th_generationbao19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446789/normal_601f192c50def.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484358/normal_5ff78301483ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_600f20864fdf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469351/normal_600c2979c0244.pdfIn PDF document text
    • http://olipaka.xyz/all_in_one_mobile_recharge_bill_payment_appriy1t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fd2cabdd43fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_601bc4b0cc79e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481852/normal_5ffe0152b45d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lurivukilurufex.epizy.com/28139426170.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/reported_speech_mixed_exercises_2.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/45272817302.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/45435943570.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/91805236261.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_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 5860 bytes
SHA-256: 3d1d68866285f0d8d7888f0dd8ab471c117587236b5ede0e1fee1e1adb346a4e
font_01_sfnt_off0000f4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AF 10184 bytes
SHA-256: 2673ec8851e46bb75c1cc75ef4dce987605087b3587d0c3f10e0a96c04fe77ea