Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6205770e589e75f…

MALICIOUS

PDF

68.5 KB Created: 2021-02-25 22:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 66a658e360c4dd5bc9dc16f6b0d0084b SHA-1: d33e3efaa44e98cf03fc85fb08f1b9dc01e29a56 SHA-256: d6205770e589e75ff92c3e1884c3cc11e4146894430cdda90ac23ea301a44310
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/award?keyword=will+there+be+a+sandman+movie PDF link annotation
    • https://cdn.sqhk.co/nusuguponu/947j5XY/dogiduluzebijutipurofeze.pdfIn PDF document text
    • http://expressday.online/amazon_kindle_unlimited_cancellacun65.pdfIn PDF document text
    • http://trikolor.site/43184505757j3odm.pdfIn PDF document text
    • http://znalomstvavip.site/psicoterapia_existencial_yalomczc8v.pdfIn PDF document text
    • http://simultaneously.space/xatekugejavavufuje1k1ug.pdfIn PDF document text
    • https://cdn.sqhk.co/dilobowuz/41jhVEx/pomitoru.pdfIn PDF document text
    • http://pearhaidhr.fun/arial_font_free_for_macaxxxl.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/vikogutepefexug.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/cfDD5jd/galum.pdfIn PDF document text
    • https://cdn.sqhk.co/lukulobu/jbifMth/idle_champions_of_the_forgotten_realms_character_upgrades.pdfIn PDF document text
    • http://nevodoma.iblogger.org/mandrill_template_api.pdfIn PDF document text
    • http://6gusevshop.website/neet_2019_answer_key_release_date3q8g0.pdfIn PDF document text
    • https://bodumiwi.weebly.com/uploads/1/3/1/4/131406735/7126196.pdfIn PDF document text
    • http://spoonnumberone.xyz/rejection_letter_template_emailf6kup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tokavazeweg.epizy.com/10296148643.pdfIn PDF document text
    • http://zigixukotezu.epizy.com/fojizejut.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_off0000cf99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF99 5276 bytes
SHA-256: 2f8f0f1a6008a09496d88e775e4018b48d9d827f3ea86a62ec7ff11cf4d76684
font_01_sfnt_off0000e166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE166 11124 bytes
SHA-256: bf83522a9aaa3d942bb3a736f9418eb2defc746270d2f78766fdbfdfcc2f62c8