Malicious PDF — malware analysis report

Static analysis result for SHA-256 db727268fec84a6e…

MALICIOUS

PDF

64.6 KB Created: 2021-03-03 17:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 44a8aa337910543c6a9b89877fe46ebe SHA-1: 8dcde82e5de1c36af3f262f42ca85d767a14d831 SHA-256: db727268fec84a6e206261b367720944aae884643c5640cf2d9976a77623689a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=codigo+de+etica+del+trabajador+social+en+colombia+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469824/normal_6026a95e52271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486051/normal_6014590aec62a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393359/normal_6038cb83146f7.pdfIn PDF document text
    • https://sugodaxekot.weebly.com/uploads/1/3/1/8/131872070/1458510.pdfIn PDF document text
    • https://xesuxikoju.weebly.com/uploads/1/3/4/0/134095833/460c55749.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413000/normal_5ff948d0a5003.pdfIn PDF document text
    • https://cdn.sqhk.co/fevubito/hiOsOJv/cultist_base_sentinel_battery_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379219/normal_5ff1c961ec6c8.pdfIn PDF document text
    • https://cdn.sqhk.co/tanemurad/hhChaha/major_mayhem_2_apk.pdfIn PDF document text
    • http://torevifij.iblogger.org/febrile_neutropenia_guidelines_idsa_2017.pdfIn PDF document text
    • https://bifezogutagu.weebly.com/uploads/1/3/4/5/134598372/pufaxesite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://welegovejebiwun.epizy.com/jabab.pdfIn PDF document text
    • http://vopuxoke.epizy.com/wutofi.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_off0000bcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCDD 5596 bytes
SHA-256: c889182a6848562ce2c83e531705ab78507eccebc282ae4f9848e45098e0e23e
font_01_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 11084 bytes
SHA-256: e40200fda7622fba87c9e6bf1d7d3473cbcc99d76b6aec609055b07eed36372c