Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff41e3f67d86c1e2…

MALICIOUS

PDF

71.1 KB Created: 2021-02-21 21:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 667d8536469a93681030fde4d95117c3 SHA-1: 55ad1471d5a1904b0d6a08560ebc79078355b4bd SHA-256: ff41e3f67d86c1e2e736b5cba54d07e7356bc3f6b4fd225839f46083b9b8548c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=chemquest+16+answer+key PDF link annotation
    • https://zegaturivelegob.weebly.com/uploads/1/3/1/4/131437779/2390163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_60326d6619ec4.pdfIn PDF document text
    • http://stav-games.ru/adhd_screening_toolsh8bmc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425759/normal_5ffb67fd91618.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497372/normal_6002e8701ae92.pdfIn PDF document text
    • http://radanews.site/average_tip_percentage_for_pizza_delivery7chnz.pdfIn PDF document text
    • https://pawomasa.weebly.com/uploads/1/3/4/7/134737305/3661782.pdfIn PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/kavinimafalagul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gusukeru.rf.gd/vasoturegezoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/dnd_character_sheet_online.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/tasamibanujamovajev.pdfIn PDF document text
    • http://zuwosopawekaz.rf.gd/present_progressive_verbs_worksheet.pdfIn PDF document text
    • http://pixunarev.epizy.com/parazerigijojani.pdfIn PDF document text
    • http://xubibufopude.epizy.com/bootstrap_form_center.pdfIn PDF document text
    • http://miripiwamaza.epizy.com/bipin_chawdang_all_assamese_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/low_oxalate_diet_meal_plan_filetype.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/melawov.pdfIn PDF document text
    • http://tuzekejaxegis.epizy.com/wiwivuramusar.pdfIn PDF document text
    • http://saxogif.epizy.com/fapanemage.pdfIn PDF document text
    • http://molodoku.rf.gd/caterpillar_annual_report.pdfIn PDF document text
    • http://matogidujizovoj.epizy.com/voxepororukug.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_off0000d91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91D 5388 bytes
SHA-256: c93946d39cf080077e9b7af55f2412aea082a57838dd672a25bf4f8b3fa7427a
font_01_sfnt_off0000eb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5E 10444 bytes
SHA-256: f1204f197c989a987ecf4e45bc0383b6c3fb2cbcb4fde60839b618d7d43fb3bf