Malicious PDF — malware analysis report

Static analysis result for SHA-256 618f54128b9ac86c…

MALICIOUS

PDF

78.3 KB Created: 2021-02-02 04:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 40195ee007df769235496a0b6f543c48 SHA-1: d089e62f050e2ff7eb63888603fcf0501b936c32 SHA-256: 618f54128b9ac86c05ea26269f6ad67fdfb672ad673a731c91ead9c0ac000c0c
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=cotmanhay+junior+school+ofsted+report In PDF document text
    • http://alternativeinfluencenetwork.net/a_puro_corazon_capitulo_2_vimeom6hlq.pdfIn PDF document text
    • http://imedo.ru/best_scorer_serie_a_2020jr86w.pdfIn PDF document text
    • http://sapofogagesari.iblogger.org/nutujuwapa.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/0Nhdtjh/dikazupudulavak.pdfIn PDF document text
    • http://3bki.ru/exemple_de_dpf081l.pdfIn PDF document text
    • http://future-techno.ru/formula_de_porcentaje_en_masa261m5.pdfIn PDF document text
    • http://probmaka.tech/the_count_of_monte_cristo_2002_scripthmdef.pdfIn PDF document text
    • http://stc-l.ru/koratukisopagukutali3p45p.pdfIn PDF document text
    • http://muldwych.com/maji_de_watashi_ni_koishinasai_download_vnol8ip.pdfIn PDF document text
    • http://cashbackmoney.info/ludovico_technique_in_a_clockwork_orangeadkv6.pdfIn PDF document text
    • http://123dutch.com/96491447771k4ylr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roweviwumi.epizy.com/bureau_of_magical_things_episode_20.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/file_type_cdr_free.pdfIn PDF document text
    • http://gonuzalujulogab.rf.gd/15231582263.pdfIn PDF document text
    • http://nidudovuj.epizy.com/nubimu.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_off0000f3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D3 5476 bytes
SHA-256: 0176ff71bdfc07c44d55192201937a6a82106b28f53f550f5a94855e26404e4a
font_01_sfnt_off00010652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 11236 bytes
SHA-256: 4930808cd48fba40e4b3002e44ed4dc0c5c38aeecce76d109d583a66bf72c451