Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd59af9d32a88217…

MALICIOUS

PDF

74.3 KB Created: 2021-02-25 14:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4b64d6fcd36fe4190e816c4eaab40923 SHA-1: 0e8bfd589d65bfbeed886cdd17341d5ea8a1d71f SHA-256: dd59af9d32a8821783e232026b30c2cad9fccd1b221727b001832ba28e6bc28c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/wb?keyword=types%20of%20pvc%20plumbing%20fittings PDF link annotation
    • http://selolatoxomida.22web.org/pumabinudodovepovifo.pdfIn PDF document text
    • http://avto-document.site/kisurrfjyj.pdfIn PDF document text
    • http://affilateapp.online/ski_jump_nose_meaning1iney.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479673/normal_60061e3108eda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445892/normal_5fd2f7ff7e095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505699/normal_60359bb26505b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wumujofagitamix.rf.gd/metformin_hydrochloride_sustained_release_tablets_ip_500mg.pdfIn PDF document text
    • http://jarexuvi.epizy.com/bizajini.pdfIn PDF document text
    • http://xupewosupegosax.epizy.com/ti_83_calculator_for_iphone.pdfIn PDF document text
    • http://nipixexit.rf.gd/vault_calculator_hide_pictures_premium_apk.pdfIn PDF document text
    • http://xomexopiguv.rf.gd/xamavijiduwufuxikupuvel.pdfIn PDF document text
    • http://pisuwemale.epizy.com/gf_bf_song_lyrics_video.pdfIn PDF document text
    • http://zofunumuwade.rf.gd/89049940944.pdfIn PDF document text
    • http://supoxurenabix.epizy.com/my_grandfather_s_clock_sheet_music.pdfIn PDF document text
    • http://powupavosugujiw.epizy.com/ccna_certified_resume_sample_free.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_off0000e721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE721 5280 bytes
SHA-256: e377f29d90c135c29ab35ea62ab4345133eb2774c799c8adee3b5faa235a9a63
font_01_sfnt_off0000f925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF925 10316 bytes
SHA-256: 24c6f03c7ca012deacdd1520ae5eaef17d8db11d069416cc6564046cb6c52ad4