Malicious PDF — malware analysis report

Static analysis result for SHA-256 0791aa4d4c730322…

MALICIOUS

PDF

73.1 KB Created: 2021-02-23 03:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4d156d44e02a64534042e0336e2c2741 SHA-1: 7903cb052496ab476efeb88d7d7a61b1f8771db2 SHA-256: 0791aa4d4c730322901cf3b8e22d8f787077e70d48a746994219bc5d14267d41
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://bologen.ru/strik?utm_term=end+of+the+world+clock+2021 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485809/normal_6025fb9f6ed04.pdfIn PDF document text
    • http://ens-pictures.ru/gizubutofezo6xzkn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381098/normal_5ff62ccce9906.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/5ge46ih/37264011165.pdfIn PDF document text
    • http://reawolt.online/kelenafakakuwibomowipixautoyu.pdfIn PDF document text
    • http://lovemecompletely.com/does_mental_illness_disqualify_you_from_the_militaryrwgcn.pdfIn PDF document text
    • http://naykaryadom.fun/jump_rope_workout_schedulefnx3j.pdfIn PDF document text
    • http://gufutaca3.xyz/622973425542pvpq.pdfIn PDF document text
    • https://cdn.sqhk.co/lewenowaxer/hichgjg/nujipeko.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/TihgdHW/79686467597.pdfIn PDF document text
    • http://sallles.ru/73691067658r0lj6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/buddies_in_india_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/sony_bravia_android_tv_features.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/juboxixeposetejagokegapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/parkinson_disease_treatment_guidelines.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_off0000e2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AA 5160 bytes
SHA-256: 5a27a9d51e3a546734763072000ca7459ad5fcc0e30265b364419c55af569c65
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 10388 bytes
SHA-256: cc388be332375311d5f7061dece9c8abf0fef561362674a97ed5233b5b4339f6