Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce57e8c29d536f2…

MALICIOUS

PDF

70.1 KB Created: 2021-02-25 06:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c48bdb18e5dc0a191a09f62b58ea9760 SHA-1: 957d512688071a74ac64859b9c2000317482cd08 SHA-256: 3ce57e8c29d536f296a96a503677a3eff937f5917ed5e42bbab4714b686b0e79
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/wix?keyword=proper+nouns+worksheets+4th+grade+pdf PDF link annotation
    • http://com-signto5.xyz/gurejisuxur9jbi.pdfIn PDF document text
    • http://neo-tp.ru/86390458775qnyp6.pdfIn PDF document text
    • http://grantmedica.ru/77350303098nhc76.pdfIn PDF document text
    • http://noverst.xyz/social_media_marketing_for_dummies_bookdj271.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/m1idphh/the_american_president_speech_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/Kijbihx/37969637276.pdfIn PDF document text
    • http://legko.travel/rabbit_hole_whisky_pricev6z51.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/68565566969.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/Elhetd2/warplanes_ww2_dogfight_nintendo_switch_review.pdfIn PDF document text
    • http://nebo-baikala.ru/north_indian_wedding_vegetarian_food_menu_list9di3x.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/cuanto_es_1_metro_80_centimetros_en_pulgadas.pdfIn PDF document text
    • https://cdn.sqhk.co/vivakawibaki/grCHb9I/takofujevabosakibuv.pdfIn PDF document text
    • http://vipadminler.org/857996450448x4w8.pdfIn PDF document text
    • https://kutijodokijo.weebly.com/uploads/1/3/4/7/134706590/4068724993.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/7icDIK3/xakusutosezosutikeve.pdfIn PDF document text
    • http://gravkamen.ru/avast_antivirus_pro_2019_apknyrc6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/redariwopemelonelukigo.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_off0000d55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55B 5516 bytes
SHA-256: 29cc70fb968094b7c880eca586b3cbf48d973f209140b2d6a98de66d3115a107
font_01_sfnt_off0000e838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE838 10452 bytes
SHA-256: 7ac6c73b8ad51bf11ee5de805e7382378b6bc5e64795749811388c24c55a1a30