Malicious PDF — malware analysis report

Static analysis result for SHA-256 287b50668e2bc635…

MALICIOUS

PDF

69.6 KB Created: 2021-02-12 17:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4d228865f4a3cd65122fa02ff23e696b SHA-1: 04124a6b10c6343ad42c31bbafb72e077179c572 SHA-256: 287b50668e2bc635c8e97977ad22a1dc7be8db06c9fc60ad369d0ae2f5097bcc
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://seumenha.ru/wb?keyword=audio%20video%20converter%20app%20for%20android PDF link annotation
    • https://cdn.sqhk.co/vonofuguniti/hghbibN/zoberixatizojimilexifil.pdfIn PDF document text
    • http://viwimewi.22web.org/cdc_dtap_vis_sheet.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/wunokifiduroza_verupirufevox_dabojomav.pdfIn PDF document text
    • http://rufisurerupu.iblogger.org/baffled_to_fight_better.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/bsYicjj/93932127672.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/zugutixe/chloroform_meaning_in_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/xunulodam.pdfIn PDF document text
    • http://tivogowajap.epizy.com/17879650277.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/cgst_full_form_in_english.pdfIn PDF document text
    • http://wedutatitupaze.epizy.com/bodyguard_movie_all_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/hengtong_group_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/certisign_gemalto_driver.pdfIn PDF document text
    • http://nixewawomito.epizy.com/94015035113.pdfIn PDF document text
    • http://ziboporo.epizy.com/76066043870.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/71898654897.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_off0000d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45D 4988 bytes
SHA-256: 09443b63f39f60994eac55e41e3a0f8db0ed034821dee30260a5e8843ac3d96e
font_01_sfnt_off0000e56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56F 10596 bytes
SHA-256: be6f68420ef46ed46bddf31b802aefa271f4e5e6d288e1dd209d0a5ba95409ae