Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1c32ebfad84eac…

MALICIOUS

PDF

71.7 KB Created: 2021-02-13 04:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c6bc7a8cd8e1f5380a84334973d6451a SHA-1: e7ae93a15c78164b73a9f14cbe8db28dd6b7185e SHA-256: 0a1c32ebfad84eac15707955f19347d000518c328a8c315f877461dcfc6cb495
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=best+manual+can+opener+reddit In PDF document text
    • http://numberoone.xyz/331317003777hqg0.pdfIn PDF document text
    • http://udilische.club/92352026629l4ky4.pdfIn PDF document text
    • http://arm-watch1.club/vegidurigaminerewzdz9r.pdfIn PDF document text
    • http://community-day.ru/56329247623yonit.pdfIn PDF document text
    • http://wekeb.space/iwsr_report_2019avjgi.pdfIn PDF document text
    • http://raifaisentgo.online/popcornflix_movies_app_download02zop.pdfIn PDF document text
    • http://instapriz.online/gategopw4xx5.pdfIn PDF document text
    • https://xukifunizagopo.weebly.com/uploads/1/3/4/0/134013279/9d2e3.pdfIn PDF document text
    • http://verification-help.business/wixefi7xsez.pdfIn PDF document text
    • http://christmas-gift.ru/henna_tattoo_templatemo5d1.pdfIn PDF document text
    • http://xonubevobupok.iblogger.org/luxefisazamu.pdfIn PDF document text
    • http://my-favshop.online/balewadi_bus_naa_songs_ingazsje.pdfIn PDF document text
    • http://akvatehnika74.ru/wurisoxepofoxujiwoamio9.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_off0000db4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4D 5268 bytes
SHA-256: d958a097a27f4d3c802e9b68dd689e05b3b8d10f027d47b4975cf05621ea3719
font_01_sfnt_off0000ed17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED17 10964 bytes
SHA-256: 1ce8c334e8bdae5f4f8fd3821f6db69d6a7747dd45fee4cdc7ef2dc59aacd374