Malicious PDF — malware analysis report

Static analysis result for SHA-256 18cccb080f9e89dd…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 18:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 839c0aca1903d295e33f531a1170d444 SHA-1: cfc327f90127d6a1860f3058f54ae81b3668d096 SHA-256: 18cccb080f9e89dd724b4c6705012ef178164778242d97cfe8a32afc6923e2e5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=practice+algebra+word+problems+with+answers PDF link annotation
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/rafeburisuzuk.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/hihig8a/mituvokesuk.pdfIn PDF document text
    • http://tunulawofu.iblogger.org/juxapewefuvuroxuguf.pdfIn PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/40a54.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/9265656.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/sjgibha/gobijujar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_6009efbcf2a86.pdfIn PDF document text
    • http://vas-rem.ru/mupasubipewilijabndsj.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/ijm5Bxj/40379957501.pdfIn PDF document text
    • https://gegovowazuravas.weebly.com/uploads/1/3/1/3/131398401/4509458.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://leruxesotagas.rf.gd/bole_chudiyan_video_song_free_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/tunitufakofeteme.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/daycare_assistant_interview_questions_and_answers.pdfIn PDF document text
    • http://renemived.epizy.com/dizifa.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/47456133252.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_off0000d56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 5720 bytes
SHA-256: 6277965bab9d11e5cabfad593be7bb6ed3a47a0ec0ce7e51f858e915b0bc2383
font_01_sfnt_off0000e8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BA 11716 bytes
SHA-256: e25481d04d3cefbaa938c1544408f45149a210623ec460e0da7311636d3faffd