Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd6bbf471a1b1fe…

MALICIOUS

PDF

75.9 KB Created: 2021-02-04 10:12:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: df8ddf959fbd1f4ce1d1c5608485d8aa SHA-1: 557730bc7d26bd19b5b3b8348da28a941f80ea52 SHA-256: ddd6bbf471a1b1fe651957b79b8e536f3e09f708da209f0e0eae266b11367e8e
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://leonvi.ru/123?utm_term=edpuzzle+math+examples PDF link annotation
    • http://whitetwo.space/165620150403e04x.pdfIn PDF document text
    • http://misiliv.66ghz.com/aerogeneradores_de_eje_vertical.pdfIn PDF document text
    • https://zupelewelasilag.weebly.com/uploads/1/3/4/5/134594614/fujaki-xegezixezen-toxupapoman-tubidigepo.pdfIn PDF document text
    • http://kuxixepiral.22web.org/jokaj.pdfIn PDF document text
    • http://sokuzise.iblogger.org/assembly_rowdy_cinema.pdfIn PDF document text
    • https://foxakiletomuxo.weebly.com/uploads/1/3/4/0/134012751/25482d87c779ef.pdfIn PDF document text
    • http://stalekost.site/manual_de_cocina1vq4x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tenasupufowok.epizy.com/free_music_christmas_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/how_is_your_weekend_so_far_answer.pdfIn PDF document text
    • http://zutagokakaki.rf.gd/google_account_sign_in_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/81812748055.pdfIn PDF document text
    • http://rudurugineme.epizy.com/aleks_answer_key_math_for_college_readiness.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/wexagamawowanil.pdfIn PDF document text
    • http://simipibenafar.epizy.com/95485007414.pdfIn PDF document text
    • http://pegewolonu.rf.gd/mavumilidivonupoja.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_off0000ec5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5E 5176 bytes
SHA-256: 649e9633b778aa5881882f0895291f2f381ed44ea20fdee424b22d1ce07ca78e
font_01_sfnt_off0000fde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE0 10864 bytes
SHA-256: af72b8a89fdaffd5d803bb3a262e688bde6a2b36d029bd011e8c30993e4a9d42