Malicious PDF — malware analysis report

Static analysis result for SHA-256 4092905a13f011a7…

MALICIOUS

PDF

71.6 KB Created: 2021-02-27 04:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 780bb0d9cdfc09cd3f3f0c4b417b9e1b SHA-1: d1756af0ddb5f677dadceb2ea095a245322f378b SHA-256: 4092905a13f011a75d918563296587fa1f4b080a713a0a49005e369c7383d19b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=does%20the%20witcher%20game%20spoil%20the%20books PDF link annotation
    • https://cdn.sqhk.co/tibakekavero/7ihhiWj/honda_cb_unicorn_150_emi_calculator.pdfIn PDF document text
    • http://axecheat6.xyz/tajupavawudobul3gjxu.pdfIn PDF document text
    • https://ditomivowulute.weebly.com/uploads/1/3/4/6/134679561/fbf4efd.pdfIn PDF document text
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/joninuwanaja.pdfIn PDF document text
    • http://autocredit.moscow/microsoft_teams_meeting_recording_option_not_availablem2p0p.pdfIn PDF document text
    • https://cdn.sqhk.co/teposodigar/jaigReq/the_white_door_game_day_4.pdfIn PDF document text
    • https://direwuberegenis.weebly.com/uploads/1/3/4/3/134361890/kazufageluledumomo.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/MlDTid0/juvali.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/JiiKcqC/fugegegeb.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/ijejcf7/nibozogotidopexixazij.pdfIn PDF document text
    • https://lusebedadejaxid.weebly.com/uploads/1/3/1/4/131407110/873be19d055108.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/hbghKhh/83020450821.pdfIn PDF document text
    • https://wivutukezed.weebly.com/uploads/1/3/1/4/131438473/belufinare_guvaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://simivejed.rf.gd/babua_comedy_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/tojepoziripapuxenu.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_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 5644 bytes
SHA-256: 0abc3e0b866fad86148b136b7d197f1ea75ad1b61216ab5f1f885c6487ea215c
font_01_sfnt_off0000edbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBF 10472 bytes
SHA-256: aac436ff8d6f659f87c73cd7b39ef9d671aec2cae500529376391dabe3f41aa6