Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd2ea443c9496ea…

MALICIOUS

PDF

64.8 KB Created: 2021-02-17 21:58:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 59648e3e1f645dfc7f9fe7e63eec63b0 SHA-1: 3998268149d505a0f5ad09ba1acc26137dc4f812 SHA-256: 3dd2ea443c9496eae176d12ca12a7636e0120923b78517b6fe0c417e2564be4a
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/wix?keyword=animal+coverings+worksheet PDF link annotation
    • http://instapriz365.online/ejercicios_ajuste_reacciones_quimicas_3_esox26se.pdfIn PDF document text
    • http://select-get.top/gun_cad_filesrw06k.pdfIn PDF document text
    • http://berabujadew.22web.org/89081305515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481067/normal_5ff8df7e24f94.pdfIn PDF document text
    • https://diziwupufetut.weebly.com/uploads/1/3/4/4/134477772/418c1a554721.pdfIn PDF document text
    • https://fotijaxak.weebly.com/uploads/1/3/4/1/134108731/xizusuziko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476924/normal_5fffa420826e2.pdfIn PDF document text
    • https://cdn.sqhk.co/zonurubo/iWDiZuV/change_line_color_after_plot_matlab.pdfIn PDF document text
    • http://twobigs.space/1260292585986yw8.pdfIn PDF document text
    • http://lumacy.site/2479748641661bdz.pdfIn PDF document text
    • http://ravitidi.22web.org/broil_king_steak_grilling_guide.pdfIn PDF document text
    • http://cmbespaceclient.xyz/72476834608gjq3r.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_off0000c1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C2 5416 bytes
SHA-256: da53f533bdf2bcceab0d7a469e16d2e205a969977d7ca21ac4b75e6216ab8fac
font_01_sfnt_off0000d412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD412 10100 bytes
SHA-256: 31862cebb29489e3cf9d9e47eabd8ff54bf7c9d7a9eab444b5180fb1775d5c96