Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd5329c176a16915…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 23:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 24ba09cc327e9026e3cbb4639fc664e9 SHA-1: 84a72ccf4dd9d8b9d3979669217a1c7734e1c2d6 SHA-256: dd5329c176a16915bf2c95ada3f62f3843931497ec00d3bb30aff4eb4a21f9eb
146 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/wix?keyword=chapel+hill+high+school+calendar+2018 PDF link annotation
    • https://bufibetotireguk.weebly.com/uploads/1/3/0/7/130739935/b61b7af18c8.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/heart_of_darkness_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/iRXEegj/ghost_killers_vs_bloody_mary_imdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410703/normal_5fd7e269f3599.pdfIn PDF document text
    • https://zebepinexorusog.weebly.com/uploads/1/3/2/6/132695607/39bb7.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/xipifepuzakiloxizededolit.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/b785653d8d3951.pdfIn PDF document text
    • http://ropejolun.iblogger.org/what_are_some_life_accomplishments.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zoxutudirufusoj.epizy.com/naxasubanutut.pdfIn PDF document text
    • http://zevusup.atwebpages.com/19203788507.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/jobalawugezusemagudo.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/best_music_apps_2018_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/platform_wedge_sandals_steve_madden.pdfIn PDF document text
    • http://wepirizifomonij.epizy.com/99635509119.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F0 5588 bytes
SHA-256: 2d927e6baa32a8daa8bf551a2b83b39708202edea704caee95c3d4444ef61b20
font_01_sfnt_off0000e3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 10452 bytes
SHA-256: 96635353e2eb10936d1924770d169fbd335305ecbecff8ca264ad2a3149b577f
font_02_sfnt_off000107a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f