Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebaad795def45c66…

MALICIOUS

PDF

69.0 KB Created: 2021-02-21 11:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fcdaee89aacf458164fb235733dfed3f SHA-1: fa1ff9ea8b8369587ba516660965c7a2e0a4545d SHA-256: ebaad795def45c667d1fe116cd60de2b507163608f04af46c74944aa0a6eba8d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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=i+love+traffic+hacked+unblocked In PDF document text
    • http://bufo.online/78785080386sopb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_602295afd6466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_60199152f1359.pdfIn PDF document text
    • https://cdn.sqhk.co/vedukosamo/grgd4hc/folk_religion_meaning_in_bengali.pdfIn PDF document text
    • http://nat-fru.space/stranger_things_season_1_subtitlesnfzye.pdfIn PDF document text
    • http://andyhong.blog/great_customer_service_letter_templatenfcwy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403270/normal_5fd870bb6490b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487618/normal_5fe2d9977bf5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373248/normal_5fcd5fb962166.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/Wfjajgy/collage_maker_android_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_6014d5030b360.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/Dt9hegc/sea_battle_world_war_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_5fddc16edcbfe.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/WjiNhjh/e_wallet_account_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494431/normal_5fe15a35df77c.pdfIn PDF document text
    • http://italiabeach.space/828932583932f4az.pdfIn PDF document text
    • https://gadofipod.weebly.com/uploads/1/3/6/0/136056298/ca44e492.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_off0000cf18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF18 5132 bytes
SHA-256: 1b085090e9f9c429968730f641936961fe701aa3a3be4cdd9a0298c0582cdf02
font_01_sfnt_off0000e08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08A 11664 bytes
SHA-256: eda5496a58e09703e9a491c5c27a9398609a01e64faedcec549938f446c8d922

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