Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1c9cdc28fe21c4…

MALICIOUS

PDF

73.2 KB Created: 2021-02-27 00:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b42056a262d3da9e126875b3c74a888c SHA-1: dc80f20402e37854653b30e1214430fb60d1f1e8 SHA-256: fb1c9cdc28fe21c45a3f3818cbd098d94de65e4bd3779679e512b8cf069b0b2b
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://gimoguvi.ru/wix?keyword=wtw+elementary+spelling+inventory+feature+guide PDF link annotation
    • http://tiktokfrance.fun/nidowazowilemy.pdfIn PDF document text
    • http://samelike.site/backbeat_fit_does_not_chargep2a1f.pdfIn PDF document text
    • http://bioforce-co.site/phet_friction_lab_worksheet_answersbc93k.pdfIn PDF document text
    • https://cdn.sqhk.co/mafozerekat/7LhjKWA/lafozopurodapitobej.pdfIn PDF document text
    • https://cdn.sqhk.co/dizukenepu/aEhhSjj/charge_2_not_syncing_with_android_phone.pdfIn PDF document text
    • http://pixelbarista.com/zetuxulagiputufekupi8y8mc.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/gNhwjfU/51014718579.pdfIn PDF document text
    • http://zathkatow.xyz/cbse_net_application_form_for_december_2018aejzq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401972/normal_60339379eea47.pdfIn PDF document text
    • http://detonic-italia.website/popcap_bejeweled_classic_free1zy7c.pdfIn PDF document text
    • http://hihikane.space/functions_review_worksheeth9gr7.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/JYhgQmd/sing_karaoke_online_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444096/normal_5fdc628e7820d.pdfIn PDF document text
    • https://cdn.sqhk.co/pavuraxutem/8hecjgr/status_saver_for_whatsapp_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450043/normal_5ffe2b09792f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376357/normal_5fe0296b84830.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/HggRzhe/jiruvigazun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD855 5628 bytes
SHA-256: fcd95b978d10d6c38612aa238244f626c86f45453ce13dcab6aeb1a3405e890e
font_01_sfnt_off0000eb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7C 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000f40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40A 10148 bytes
SHA-256: c79ce86c90b6dda34f4168602b4ede42af94bd274272b5f7a7c078e036791534