Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da4db2c9e37b74e…

MALICIOUS

PDF

71.5 KB Created: 2021-02-16 22:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: db16f88d07741512af187b75e9a2da37 SHA-1: ce713ae1184b66a45d409b0fa1843f408fc4427d SHA-256: 1da4db2c9e37b74e6d04614425f7a1d7f096b5cb687a1042e8121accf2ad8f35
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=three+a+light+book+free+download PDF link annotation
    • http://hightrade.club/954937643181sh3l.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/tuwinix7jgwg.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/ghjjhcb/reregomera.pdfIn PDF document text
    • http://igcopyrightclient.com/fitazemaxozuzije42n44.pdfIn PDF document text
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/4d00c2c4bd8efa6.pdfIn PDF document text
    • http://wide-mean.top/strongman_training_templateus6tb.pdfIn PDF document text
    • http://hellesypakk.online/motorbike_driving_simulator_3d_apkfw2tq.pdfIn PDF document text
    • http://amin-ukraine.net/friends_quiz_with_answers_printable2u7jy.pdfIn PDF document text
    • http://ledimpress.biz/grammaire_progressive_du_francais_debutantgdyvj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_5fd5f7376dcdd.pdfIn PDF document text
    • http://lessonsonline.site/89300345539tusta.pdfIn PDF document text
    • http://reduslim-europa.site/teoria_psicosocialichol.pdfIn PDF document text
    • http://gnoogle.site/multiplying_and_dividing_radicals_wo8y23e.pdfIn PDF document text
    • http://myfirstsite.xyz/debut_video_capture_full_version_crackehct0.pdfIn PDF document text
    • https://mixozanuzobese.weebly.com/uploads/1/3/5/4/135400893/6806603.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE8 5236 bytes
SHA-256: 699d6663af7c2791982859f42be1b73c16ce36e6a00f3149b2179373f6c173c3
font_01_sfnt_off0000edc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC6 10348 bytes
SHA-256: d91ed60dfcce2be1cd8af0d160dc3a35c8f63fa07c3c68fa90a0f1c784800b89