Malicious PDF — malware analysis report

Static analysis result for SHA-256 1431bd7a9bf768c3…

MALICIOUS

PDF

72.8 KB Created: 2021-02-15 02:01:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 55355d1e832171e5acd82ba46d4b8992 SHA-1: 72c7f89d84db46eaef21500e96b5daedfb1ee83b SHA-256: 1431bd7a9bf768c3d2b74a6a90ee3a66bfa9ea06c31f2a8babcd54dd3f3d9775
186 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
  • 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.
  • 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://maypoin.ru/wix?keyword=jalan+tikus+apk+tubemate PDF link annotation
    • https://cdn.sqhk.co/lexoxuxoluvi/sqwiahh/22979480769.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/jiyjbic/bisedevaturugonawanepifik.pdfIn PDF document text
    • https://navuvosukogeguf.weebly.com/uploads/1/3/1/4/131454151/tevifebaxo_vafowej.pdfIn PDF document text
    • http://fovagenifozemub.iblogger.org/31478364007.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5ffd72b896469.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/cIoLhiL/stickify_5000_stickers_for_whatsapp.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/LmTegjn/moomoo._io_official_pikes._io_brutal_squad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_600f4461b57de.pdfIn PDF document text
    • http://gofidiva.iblogger.org/senior_announcements_templates_free.pdfIn PDF document text
    • http://najapizarut.22web.org/gavenuviworavasutupubozaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481513/normal_601dd15e6db64.pdfIn PDF document text
    • https://nofiluwovix.weebly.com/uploads/1/3/0/7/130739726/3080919.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/jdhahhi/war_table_time_dragon_age_inquisition.pdfIn PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/zaxufuzudebab-putere.pdfIn PDF document text
    • https://jinidodax.weebly.com/uploads/1/3/0/9/130969434/b648005ca9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bixuxopot.epizy.com/bkav_home_full_crack.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC23 5060 bytes
SHA-256: aa8f94b466a7d3e5b42f73be8c3e0a8a6b834f7380ed44269e1417b1f594d69e
font_01_sfnt_off0000dd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 10248 bytes
SHA-256: 5a47549d494cafd05976d1fa97f5341825a286808024747e2f0f705bf331b7eb
font_02_sfnt_off00010084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10084 16376 bytes
SHA-256: 069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c

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