Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be7f84d22965406…

MALICIOUS

PDF

70.2 KB Created: 2021-02-20 04:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 234c9338636454b5ccc7d665fbeb29fd SHA-1: 765a012ae7bb91404b3ba1f85a26960b80ad6efd SHA-256: 1be7f84d229654064e4964d5bb0951fa0fd4b4979aa89f36259243ec3c0fac3d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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=polynomial+identities+worksheet+and+answers PDF link annotation
    • http://granitmetrospecstroy.ru/306741072670jfn7.pdfIn PDF document text
    • https://gukapubukon.weebly.com/uploads/1/3/4/1/134108909/fijeditod.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/hjeia6w/lusudesirowodabudafoki.pdfIn PDF document text
    • http://donbetosstreettacos.com/frank_frazetta_sketchbookmb5nw.pdfIn PDF document text
    • http://emmetrix.net/fazigutomereletesifebawar1cev.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/ckAjagd/64891620797.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/jdXeOyX/line_puzzle-_logical_practice.pdfIn PDF document text
    • https://kasewipiliri.weebly.com/uploads/1/3/4/9/134901701/sapasujos.pdfIn PDF document text
    • http://timelessdecorum.com/97505537087ojm67.pdfIn PDF document text
    • http://allerop.xyz/gisezikeneguxokowubovq0jze.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/auPWjha/zuma_deluxe_para_pc_gratis_completo.pdfIn PDF document text
    • https://zoxujaratufopa.weebly.com/uploads/1/3/5/3/135399722/bf83127848e86.pdfIn PDF document text
    • https://cdn.sqhk.co/simikitivo/GifhfJw/kikibu.pdfIn PDF document text
    • https://tufakuxumiwe.weebly.com/uploads/1/3/1/4/131454237/2257077.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lososimap/zakekabiriposufed.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/zagoxogenewozabug.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95F 5112 bytes
SHA-256: 45ef77ded79f5424eff42e5c753a515297d40dd39a8c2f88e2c31dcb124c1fb6
font_01_sfnt_off0000da97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA97 10304 bytes
SHA-256: 476539950268161ec7f8679c99c62ad0eae06a87d0cad29894268fed097d7ca7
font_02_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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