Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eaf207b7ba3c55c…

MALICIOUS

PDF

74.7 KB Created: 2021-02-21 07:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0ba59bdc3eb19124b4802823de7a6743 SHA-1: 9d7e53b4ceef64bca62456d8ee74e8908c1fd213 SHA-256: 7eaf207b7ba3c55cd769c7a92a81faba159fe286557b9b5b3d4e3cad8cffcece
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://baarspo.ru/123?utm_term=when+was+the+term+art+deco+first+used PDF link annotation
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/ddc06341d59c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fd3dc4fa68b9.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ih8Msje/62290705322.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/4vz5Uie/imo_free_video_calls_apps_for_android.pdfIn PDF document text
    • http://mowuvivof.22web.org/xamarin_forms_button_icon_xaml.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/7f92ab4c7.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/ijgcgiQ/lowuwiziw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457849/normal_602d62c2b35a8.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/hfjiLhb/go_karts_plus_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ropanosuge.rf.gd/terraform_state_azure_storage_account.pdfIn PDF document text
    • http://lezujepadu.rf.gd/xodajizunosuludug.pdfIn PDF document text
    • http://xakodalomidu.rf.gd/airline_boarding_pass_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/calculus_early_transcendentals_3rd_edition_jon_rogawski.pdfIn PDF document text
    • http://fijoramobizedej.epizy.com/28294987119.pdfIn PDF document text
    • http://xeduniramabal.rf.gd/jolujukurexe.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_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 5332 bytes
SHA-256: c1b56ff52c6411e8f9b1b2b48626d8d94efd2ac0fbde52206b04837aab24df8c
font_01_sfnt_off0000f962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF962 10860 bytes
SHA-256: 2374afdaa4c846089e8e9199ca5a3cd5c64c08e5e15a6ee5d6e6beea58a5d9cd