Malicious PDF — malware analysis report

Static analysis result for SHA-256 41af5ac6576e4cbb…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 01:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5fcb493ee88a4b7bc299d2405db6b0d3 SHA-1: 60e0344b04d3d906b9de9074d68a9bde0a5761f2 SHA-256: 41af5ac6576e4cbb3143479302ca911feaea72c7a3930031eb1454dba94f2d6e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/award?keyword=vitapur+water+dispenser+filtration+system+manual PDF link annotation
    • http://autokenn.com/codigo_procesal_civil_y_mercantil_comentado_2016uztdb.pdfIn PDF document text
    • http://idealicaitalia.website/96493217285ahc7.pdfIn PDF document text
    • http://belplitka.ru/dvdfab_free_download_full_version_crackrsetf.pdfIn PDF document text
    • https://mosivupidener.weebly.com/uploads/1/3/1/6/131637589/50234e0a62edb02.pdfIn PDF document text
    • https://japapitamamevoj.weebly.com/uploads/1/3/2/7/132740309/549e7f2963.pdfIn PDF document text
    • https://ranixujofenak.weebly.com/uploads/1/3/4/0/134016935/nudiriworuzobab.pdfIn PDF document text
    • https://cdn.sqhk.co/pitewomepe/D2dvUjg/31996701477.pdfIn PDF document text
    • http://cardioactiveuficiale.site/metal_wall_art_world_globe9xgak.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/hyicigh/retro_video_game_music_maker.pdfIn PDF document text
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/565c01def151f94.pdfIn PDF document text
    • https://ragivigelogupow.weebly.com/uploads/1/3/4/5/134525503/luritawezid_xebuwaxizaj_lofukizelot.pdfIn PDF document text
    • http://newsportstechnology.ru/voronelutuvevoghh7c8.pdfIn PDF document text
    • http://ins.expert/telafiridalinejbqms0.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/veraxawewib/33456291047.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_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 5348 bytes
SHA-256: b43fb35d94cc345d7d0e7ebcea55fc8035076b989ad2803135c063cbe0b6a9af
font_01_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 10380 bytes
SHA-256: e41dcf96a0dcee842409cd93749f2d2c8f769b96ef2dcb87be9d23eefe44f245