Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a98f6d4e245c52…

MALICIOUS

PDF

74.6 KB Created: 2021-02-25 11:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 99c08d4c0b51e461800071bc95f097e3 SHA-1: 4e6045cb62334abf9063cb47b9b68a84c4b61509 SHA-256: f1a98f6d4e245c52e47773601e4ba2a361e712a07cd831ed9d01b9f61f23bb1c
126 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
  • 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://baarspo.ru/123?utm_term=how+to+install+fl+studio+on+windows+7 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482617/normal_602ba257dc102.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/luxekapirum.pdfIn PDF document text
    • https://xisofufewazexi.weebly.com/uploads/1/3/0/7/130776718/jukubowasitalo.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/dr_seuss_happy_birthday_book.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/basic_maths_formulas_in_hindi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_6006c503e44b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417531/normal_5ff27d3136667.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/how_to_change_cvt_transmission_fluid_honda_civic.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/acido_nitrico_estructura_quimica.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/do_self_cleaning_water_dispensers_work.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_6014d168da07b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riberudedanute.epizy.com/bwv_29_dupre.pdfIn PDF document text
    • http://zidabisix.epizy.com/plague_inc_scenario_maker_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/anaconda_python_version_3._7.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/gixeferodigabazo.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_off0000ea59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA59 4936 bytes
SHA-256: f3784e12c495815b69bf42998d1d9188977148536b84c6d760e7ce089187d056
font_01_sfnt_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 10016 bytes
SHA-256: f710b74b800f2c38cbaccf1c95207966875e9e34f8480749d1d31956a6a73080