Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a0914f2a5fa7eb…

MALICIOUS

PDF

76.9 KB Created: 2021-02-20 23:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d63f39ccb3af0ea5f11bb5b9a6159135 SHA-1: f9fc8dd4431742b5efd2b0f6b377aa9944381e4b SHA-256: 47a0914f2a5fa7eb7eb1c4dbe5c1923b6e3198558b5c42f035ea95785cae6c53
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/123?utm_term=when+did+samsung+s9+plus+come+out PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390069/normal_60294698d6b0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_6019000e10a08.pdfIn PDF document text
    • https://delidenaluno.weebly.com/uploads/1/3/4/4/134438050/jisamaxidariz.pdfIn PDF document text
    • https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/xifejadixeru_letifebu.pdfIn PDF document text
    • http://tasunixupowife.66ghz.com/cambridge_pet_speaking_exam_samples.pdfIn PDF document text
    • http://kixumitusomu.iblogger.org/todowasubutigimelemitofi.pdfIn PDF document text
    • https://fotofewoxa.weebly.com/uploads/1/3/4/8/134849098/nugelarugigenelawiru.pdfIn PDF document text
    • https://jobovivubip.weebly.com/uploads/1/3/5/3/135392816/3631857.pdfIn PDF document text
    • http://varuzajuv.22web.org/boilermaking_books.pdfIn PDF document text
    • https://gubelowilesatu.weebly.com/uploads/1/3/0/7/130739845/f1235b57f95.pdfIn PDF document text
    • https://jakoxizejibak.weebly.com/uploads/1/3/4/3/134348863/fcad9b22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481272/normal_60177a8c14421.pdfIn PDF document text
    • https://viforiler.weebly.com/uploads/1/3/0/8/130874197/fubuj_zuvugoba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojidusajotat.epizy.com/mozilla_firefox_app_store.pdfIn PDF document text
    • http://delixerilebuk.epizy.com/brawl_stars_hack_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/google_spreadsheets_link_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/nati_binodini_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/buxubonulowemomo.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_off0000ee40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE40 5560 bytes
SHA-256: f7e1d24985650ef9e4f1806c9883cc02da3ade1edad9b7a45721b40ae2cb9a50
font_01_sfnt_off00010114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10114 11024 bytes
SHA-256: 60f5b60fcb7fc14a9be81f431a7b0f0537f09e8ac8a1db382352544cc554cbd2

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