Malicious PDF — malware analysis report

Static analysis result for SHA-256 41920b8fe9b75895…

MALICIOUS

PDF

71.3 KB Created: 2021-02-15 22:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1ae4213c5d8aeedecdcdc12ce5518c3a SHA-1: 782ff4cf960ccc23d066cc9e5cf24ae0caa09676 SHA-256: 41920b8fe9b758956d2240d51b023ec2377045efcc842e79e17a129368567c44
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://druttle.ru/wix?keyword=percent+error+practice+problems+answers+key PDF link annotation
    • https://remogomati.weebly.com/uploads/1/3/4/7/134748537/musorigopu.pdfIn PDF document text
    • http://chempion.coffee/148307907068g31e.pdfIn PDF document text
    • http://wildber.store/81096539983637ao.pdfIn PDF document text
    • http://sibuvre.com/wimuwunetuxevagfp9v.pdfIn PDF document text
    • http://bumaga.bz/winopimh57on.pdfIn PDF document text
    • http://hellesypakk.online/pieta_signore_c_minor9j9yx.pdfIn PDF document text
    • http://buloshnaya.site/enthusiasm_tamil_moviesk0r9h.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/hifAjjD/4022721536.pdfIn PDF document text
    • http://ipoteka.net/access_database_templates_for_clinics1ngr1.pdfIn PDF document text
    • http://bigpleasure.ru/as_1735._1kcpdc.pdfIn PDF document text
    • http://samyog.ru/2363981124a4hma.pdfIn PDF document text
    • https://basavorulifa.weebly.com/uploads/1/3/4/8/134899730/ximew.pdfIn PDF document text
    • https://cdn.sqhk.co/nekuripafi/fjageNj/nefibanupevutipovov.pdfIn PDF document text
    • http://kwini-fini.online/metronome_96_beats_per_minuterzpua.pdfIn PDF document text
    • http://pushbiz.fun/730404036006sbtw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxufotab.epizy.com/acceder_a_la_red_local_desde_android.pdfIn PDF document text
    • http://rolozaj.epizy.com/rikizodofojokebolu.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_off0000d8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F7 5476 bytes
SHA-256: e5d3067400531fa4441cab73c765e59ecef011803a99e4d412a11267a90a04b3
font_01_sfnt_off0000eb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB97 10676 bytes
SHA-256: 2eddb44f25f061176637c3e408c0e81aa686086a04fc9e657cb84b59fc949a7c