Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9bcc99dda2acdb…

MALICIOUS

PDF

77.3 KB Created: 2021-06-11 20:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 74d057144c24e19b77c35dd60232c3f0 SHA-1: 31674dca20db787461c8527a96b226ec0a1581e0 SHA-256: eb9bcc99dda2acdb50c2a516d58b1eb69914b654ebe33fb2ef5449c9e1ef310e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which are part of a link farm designed to redirect users. The primary URL, 'https://cructi.ru/pbw?utm_term=gta+teleport+glitch', suggests a lure related to gaming. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://cructi.ru/pbw?utm_term=gta+teleport+glitch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415534/normal_600adac128844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_60625b5c699d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_6012b3680f651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455179/normal_5fe8d00e02dbd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374704/normal_5fe2dec53b5c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459921/normal_606377b1e6763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461791/normal_6018d8fb5936a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5ff808dc1c1ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366408/normal_5fcef8d636d5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_5fd15aa550be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504568/normal_5fd2f19005d4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385213/normal_5fc98b7251bf9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jebusolole.pbworks.com/f/22697706692.pdfIn PDF document text
    • http://kigofot.pbworks.com/f/gta_5_apk_pc_free_download.pdfIn PDF document text
    • http://sofabiz.pbworks.com/f/delphi_2017_r3_final_keygen.pdfIn PDF document text
    • http://ronefete.pbworks.com/w/file/fetch/144485370/toyota_hilux_revo_2019_price_in_ethiopia.pdfIn PDF document text
    • http://tomabekaf.pbworks.com/w/file/fetch/145089156/22656771193.pdfIn PDF document text
    • http://zudilazo.pbworks.com/f/machine__laver_far_9kg_notice.pdfIn PDF document text
    • http://goferupemo.pbworks.com/f/prueba_de_moss_interpretacion.pdfIn PDF document text
    • http://suniger.pbworks.com/f/34277718761.pdfIn PDF document text
    • http://pebolokunaz.pbworks.com/f/soparifovuvisuzuj.pdfIn PDF document text
    • http://vomuseteweto.pbworks.com/f/vetotozitunut.pdfIn PDF document text
    • http://sovamexor.pbworks.com/f/gefomuvebulovamatebewid.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/manual_izotope_ozone_7_espaol.pdfIn PDF document text
    • http://wijozuzapusa.pbworks.com/w/file/fetch/144696624/jovubonekogexiduketepuf.pdfIn PDF document text
    • http://detomipipu.pbworks.com/f/mecanica_de_materiales_beer_johnston_7ta_edicion_solucionario.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_off0000f1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AF 5048 bytes
SHA-256: d821a8d8954e3332bb61bfb8652c1eab08ea79e42bddb2fdc6ada73208d373fd
font_01_sfnt_off000102d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D9 10848 bytes
SHA-256: 7babd75304c2b921e5a3736a166945d4d3ae019538e6bf98a4500e7346fea63a

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