Malicious PDF — malware analysis report

Static analysis result for SHA-256 4673d85ae2779edf…

MALICIOUS

PDF

68.8 KB Created: 2021-03-04 09:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5663363e05652146a1854bcb979351a5 SHA-1: 22243ff263f7f7e50c5ff26142b88804464059f4 SHA-256: 4673d85ae2779edf0d6709129af6a1203cea0b1a245debe4acb2d786ac11ca58
166 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
  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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://lozipotod.ru/wix?keyword=how+to+remove+edited+picture PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428335/normal_603f80d00cd76.pdfIn PDF document text
    • https://gabinabadebaxir.weebly.com/uploads/1/3/1/4/131408928/dodowiremor_mivuxax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_602ca6400e546.pdfIn PDF document text
    • https://fetozala.weebly.com/uploads/1/3/4/6/134678703/gelaxesob_tejumidi.pdfIn PDF document text
    • http://fokuguxeni.iblogger.org/are_dreams_reality_or_imagination.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446772/normal_5ff13e6244f29.pdfIn PDF document text
    • https://bujefodamefizup.weebly.com/uploads/1/3/1/0/131070612/torinevimatuxes-bowemogajusugu.pdfIn PDF document text
    • http://mivetofim.22web.org/new_bhajan_pagalworld.pdfIn PDF document text
    • http://xifelaseb.22web.org/88444064898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485695/normal_6007b8c395e12.pdfIn PDF document text
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/jonusirevi_bebofetex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/2308801125.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/11141767829.pdfIn PDF document text
    • http://jipakevinofulom.epizy.com/how_to_stretch_piriformis.pdfIn PDF document text
    • http://vowukexakajan.rf.gd/captcha_typing_app.pdfIn PDF document text
    • http://zifelibuvofaz.epizy.com/james_patterson_alex_cross_book_series_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/lenogite.pdfIn PDF document text
    • http://fazafof.rf.gd/3243255095.pdfIn PDF document text
    • http://lekamidoku.epizy.com/gofaniwi.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_off0000d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45D 4912 bytes
SHA-256: d2f2d47006cd93322045f100745871a1aa78825cbd593b680bf76a56a00d0186
font_01_sfnt_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 9792 bytes
SHA-256: db2199fb5aba2a1a6f38b1568a98d9bf8cca60143d5a30894f2b545d8a19f938

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