Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db802ce4eff06bc…

MALICIOUS

PDF

74.0 KB Created: 2021-02-22 10:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 943b24b7e105d7b6a1183ca9c6204c74 SHA-1: 8b8e62a93d5230329bf5c60e68c22688310577c0 SHA-256: 6db802ce4eff06bc5dd99a178c026e3c72fb86fd9c16c7a69b30a011279f6234
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wb?keyword=how%20to%20install%20kallax%20inserts PDF link annotation
    • https://cdn.sqhk.co/kosibowo/hjjjSja/niworejolisan.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/Iiazshd/wizz_air_abu_dhabi_head_office.pdfIn PDF document text
    • http://pet-guru.shop/745900583285xug.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/gijighP/build_a_bear_locations_in_utah.pdfIn PDF document text
    • http://vbruti.site/nusukipizizin35xha.pdfIn PDF document text
    • http://1xbet-football.fun/hp_laserjet_p4015n_maintenance_kit_instructionsjyyzy.pdfIn PDF document text
    • http://copyrightram.net/vadanawidobilizemakonovetw6lgj.pdfIn PDF document text
    • http://qwonder.space/334270942824azav.pdfIn PDF document text
    • http://cmbmarketing.agency/lazolila9safj.pdfIn PDF document text
    • http://sijuvibitita.iblogger.org/bhoomika_malayalam_movie_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vopokemib/dZgdhdN/gusanamekumezoxemifesuze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nupopejif.epizy.com/benevazifujubur.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/bestwap_in_bhojpuri_song_dj.pdfIn PDF document text
    • http://xaxubel.rf.gd/smokey_and_the_bandit_3_parents_guide.pdfIn PDF document text
    • http://bamemuwibe.epizy.com/haldimand_county_waste_guide.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_off0000e43c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43C 4864 bytes
SHA-256: 1e8216c4cbd9d3a3580d09c8665913901e451b0cfad4d0a70c8ae186a7ce4d28
font_01_sfnt_off0000f4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E3 11368 bytes
SHA-256: f552deb55c00b47ac5fded25cbb7105adbc74d9e3881231bc52aab5945082327