Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed63b1513ffd8928…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 02:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 812f806bbe2fe4c4e47235eede4128b3 SHA-1: 81e87be3b9b1c52c6cba73467e4f90b19f7ced52 SHA-256: ed63b1513ffd8928c168563bfb5a8dc7a0906779040090b5619bd9d105162edb
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://maypoin.ru/wix?keyword=chapter+6+math+test+answers+7th+grade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367273/normal_6021423656011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486213/normal_60110ef123e90.pdfIn PDF document text
    • http://itdiscount.info/libertango_free_sheet_music_accordionmdbn8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381347/normal_5fe460418c7f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464715/normal_600258a2cb149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5fd909128df4f.pdfIn PDF document text
    • http://zabodolodak.iblogger.org/27338782560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388405/normal_6023704d9226b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489850/normal_5fe3a5a31eff3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rebobimakefeli.epizy.com/kofejoso.pdfIn PDF document text
    • http://jelalesixavab.epizy.com/bariatric_surgery_definition.pdfIn PDF document text
    • http://rovuwuruw.epizy.com/81025465609.pdfIn PDF document text
    • http://pazatirademe.rf.gd/1140872181.pdfIn PDF document text
    • http://natexekazedap.epizy.com/83162656434.pdfIn PDF document text
    • http://xumasadepa.epizy.com/template_ecommerce_bootstrap_premium.pdfIn PDF document text
    • http://ditajizuru.rf.gd/energy_and_fuels_journal_template.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C7 5572 bytes
SHA-256: bbc341573340b51efe7e30db26658b3bc0df37a9ba4954f80aa9fcad2d448c2b
font_01_sfnt_off0000dca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA7 10888 bytes
SHA-256: fbfaf5c625a0f70cf72d9ee1af9b495a74b44da8ead39e0bc4121a796580a710
font_02_sfnt_off000100f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F2 16204 bytes
SHA-256: 31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf