Malicious PDF — malware analysis report

Static analysis result for SHA-256 405d7d8ae9b2fb51…

MALICIOUS

PDF

72.3 KB Created: 2021-02-16 07:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9445b3b1adcde0aaffe1ca082df099e5 SHA-1: a7ae4961591c0317624fb1894e627b2813c6e277 SHA-256: 405d7d8ae9b2fb5183ab68020354dd372d48dc7346c427d760ade618cb4e2303
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=navarro+cheer+clinics+2020 In PDF document text
    • http://cabinetsop.xyz/830963436897vven.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368474/normal_5fdd497f45ebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384461/normal_5fe63c32de43d.pdfIn PDF document text
    • http://parrrtner.xyz/967057912973a327.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_6019768263bc1.pdfIn PDF document text
    • http://yesstore.pro/chess_grandmaster_book9xtep.pdfIn PDF document text
    • http://vugijow.iblogger.org/lightroom_shortcuts_pc.pdfIn PDF document text
    • http://remontlegko.info/broken_screen_prank_phone_appxqcsd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452618/normal_600dc2c1dc4db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zovewopot.epizy.com/kabitexumexuwagi.pdfIn PDF document text
    • http://visagiza.epizy.com/hashar_movie_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/car_sale_agreement_format_in_urdu.pdfIn PDF document text
    • http://zafuriket.rf.gd/crestron_am-_200_user_guide.pdfIn PDF document text
    • http://vosimamasi.epizy.com/43005769019.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/anaconda_2_video_song.pdfIn PDF document text
    • http://dajidagetulawu.epizy.com/sleeping_dogs_trophy_guide_ps3.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_off0000df35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF35 5188 bytes
SHA-256: 34734589f9d65c3ee9a764107e8dc3615f42fc15122219d2e889764fab1abf80
font_01_sfnt_off0000f0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E0 10476 bytes
SHA-256: 7cef25daeb96daeb23ab71d8f94f16043311a5fd56355187cc7c174f0a2efe75