Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26a374bcb07d1e4…

MALICIOUS

PDF

74.2 KB Created: 2021-01-21 21:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 74adbdadbe1c277af7d4d522ff36af34 SHA-1: 8462e059ea372ffacca35058d7172371a4931700 SHA-256: c26a374bcb07d1e414379c447564b658ccc60095e2b8c4a94d72e443afdf7e13
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://jacksth.ru/wb?keyword=civil%20war%201864%20game PDF link annotation
    • https://cdn.sqhk.co/susojareb/x36haPm/prison_architect_mobile_apk_full_version_android.pdfIn PDF document text
    • http://pafiwuz.66ghz.com/transunion_free_credit_report_login.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/f046gd8/weather_radar_ohio_canton.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/URkj9Zt/lollipop_chainsaw_zed_voice_actor.pdfIn PDF document text
    • http://pifumufupes.iblogger.org/48343047523.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/ibGjiid/nintendo_switch_online_membership_price_uk.pdfIn PDF document text
    • https://site-1258960.mozfiles.com/files/1258960/descriptive_writing_format_for_ibps_po_exam.pdfIn PDF document text
    • https://site-1241632.mozfiles.com/files/1241632/81024678375.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dilabopitomosif.epizy.com/radical_reformation_anabaptist.pdfIn PDF document text
    • http://giduzorim.epizy.com/lindt_chocolate_truffle_flavor_guide.pdfIn PDF document text
    • http://nefijojutofad.rf.gd/95919569923.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/72389094489.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/bubble_shooter_5_apkpure.pdfIn PDF document text
    • http://vodobugatusexa.epizy.com/world_geography_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/luligetudigonijegiwofabog.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_off0000e4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CE 5372 bytes
SHA-256: 5600aa7b855e3ddbf6c052c1c1e6d75049f8000291d7315e9ebb61d8c5b22af9
font_01_sfnt_off0000f71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71E 11024 bytes
SHA-256: 0da1bee402ce1473e404940cf5782f2db3aedacd7d3839af44187ea7e643ffe0