Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8508188b2135a9c…

MALICIOUS

PDF

75.0 KB Created: 2021-02-27 04:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52dfe432d93dd01a07f853a530e44135 SHA-1: 84323b6830f0df19ebd89cc1aa9780d8b2f884f1 SHA-256: b8508188b2135a9c90e3f97ca8c352efdd8816e53bc81e799e91f36de44311ee
126 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
  • 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/123?utm_term=theta+healing+vianna+stibal+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426675/normal_601e13a347528.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/gjhcnd6/63819982657.pdfIn PDF document text
    • http://chambrehq.xyz/20935540545p9m5j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454436/normal_5fe020d09b078.pdfIn PDF document text
    • http://kemytbok.xyz/745630833074s8xi.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/gpLhhTb/kemitagowidefezimeluwut.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/jGiaigK/85426084552.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_60354d7866188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_601618cf821fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456119/normal_6016b48702dab.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/joola_ping_pong_table_touch_up_painthmi9c.pdfIn PDF document text
    • https://cdn.sqhk.co/worenora/4Z20twb/36729135039.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gevowurarabaj.rf.gd/blenheim_high_school_epsom_ofsted_report.pdfIn PDF document text
    • http://donosusiligid.rf.gd/camera_360_apk_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/united_technologies_corporation_annual_report.pdfIn PDF document text
    • http://pezedavepajizum.rf.gd/barenafapomu.pdfIn PDF document text
    • http://navamobatetipo.rf.gd/cub_cadet_ltx_1045_mower_blades.pdfIn PDF document text
    • http://xulezudo.epizy.com/name_tag_design_template_online.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_off0000e67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67E 5356 bytes
SHA-256: 578d676f668119c7d7c7320334633ae6a9821bcf6211c7c80ea0a030e72efd81
font_01_sfnt_off0000f8b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B8 11592 bytes
SHA-256: 55faaca0fc1195f592edc260c325a201414489f0dcc30cb7988573c08e1150e3