Malicious PDF — malware analysis report

Static analysis result for SHA-256 4122db4a57aa5802…

MALICIOUS

PDF

67.1 KB Created: 2021-02-20 20:06:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6c41608110423da71be00b9cb9af1897 SHA-1: 64e27db15cc90c29651e210f845447bf6fd5319a SHA-256: 4122db4a57aa5802de9c900b44d7126a09f3012db6e1e08906b456d26c7f498d
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/wb?keyword=burlingame%20grocery%20store PDF link annotation
    • http://cosmeteca.com/bupesitukogonajub6mgyn.pdfIn PDF document text
    • http://itdiscount.pro/55484611807mxb63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478131/normal_600075d4819b0.pdfIn PDF document text
    • http://mignonette.space/996180168965rlga.pdfIn PDF document text
    • http://winoorama.site/bamepateledumigc0nk.pdfIn PDF document text
    • http://nunanokipikade.22web.org/mewudokimifogek.pdfIn PDF document text
    • http://wildber.store/how_to_check_a_lawn_mower_battery_with_a_multimetereuzux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463788/normal_602767f334c34.pdfIn PDF document text
    • http://mebel-albero.ru/charmed_online_free_episodes5mt3n.pdfIn PDF document text
    • http://gamedv.design/angular_8_tutorial_espaol5rgbh.pdfIn PDF document text
    • http://govajidenemases.22web.org/flutter_push_notification_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470408/normal_5fd233199c6d4.pdfIn PDF document text
    • http://vutanari.22web.org/different_triangle_worksheet.pdfIn PDF document text
    • http://artelamp.store/xelapodapekozexivavavopilhrrv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_60268c03d02aa.pdfIn PDF document text
    • http://trackengine.host/78556496893z9otm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450511/normal_6004198b20f4c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kobukapun.epizy.com/detomigiguko.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_off0000c998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC998 5272 bytes
SHA-256: 073dcef9c1a2e89f6ad66113139de3b55c8b20eab5a7c84cdb5253ca2e173636
font_01_sfnt_off0000db79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB79 10624 bytes
SHA-256: 1531789e85cad21dee4b4a683d30b4ab9a7b39917591c5b5d91d627798ddb54b