Malicious PDF — malware analysis report

Static analysis result for SHA-256 4830c5a82dba3977…

MALICIOUS

PDF

68.6 KB Created: 2021-02-24 14:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3d0a1015f4632a2e20e1b400e71151f3 SHA-1: 3b9fec73a47ba2cfb58fa332bbbbcdaeef3d196c SHA-256: 4830c5a82dba397727fa066308ca2995d316596afa335357cb42b68faca52e8b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=parseltongue+translator+warner+bros In PDF document text
    • http://nominasacra.ru/dark_souls_3_chaos_infusionhnj1r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409243/normal_600cd060185ec.pdfIn PDF document text
    • http://goods-amzon.com/how_to_use_the_product_rule_to_simplify_the_radicalvy16w.pdfIn PDF document text
    • http://sikutamilom.iblogger.org/temple_run_brave_apk_free.pdfIn PDF document text
    • https://vizosajigu.weebly.com/uploads/1/3/1/3/131381839/tefotudaxumuz.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/HghhidY/mubixibop.pdfIn PDF document text
    • https://fivoputan.weebly.com/uploads/1/3/1/4/131408393/4669024.pdfIn PDF document text
    • https://poxagubojawi.weebly.com/uploads/1/3/1/4/131482812/nomekoku.pdfIn PDF document text
    • http://pujipaxubeko.22web.org/munovexofitepajowen.pdfIn PDF document text
    • https://cdn.sqhk.co/lutadamafe/gIheiag/vujevatijiwolipubejoma.pdfIn PDF document text
    • http://bufaturofonoko.22web.org/bhojpuri_movie_video_hd_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/jawkLie/tapiwigifube.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/3c4a909c5b0f4.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/leteraxewe/azure_striker_gunvolt_striker_pack_3ds.pdfIn PDF document text
    • http://gewagopixinilu.rf.gd/physics_principles_and_problems_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/free_games_dx_ball_3.pdfIn PDF document text
    • http://zoriwotub.rf.gd/1906212614.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_off0000d090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD090 5084 bytes
SHA-256: 0d1cc450d596832b1c61ad6cd80aca7b0f2f6b6d59bf929e0f16a663c0e40952
font_01_sfnt_off0000e1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FB 10184 bytes
SHA-256: 5147921049a27ec7800786858732d35787b7d95769286ce1ff2ec39e525bcf61