Malicious PDF — malware analysis report

Static analysis result for SHA-256 daaec1776b1b7839…

MALICIOUS

PDF

71.1 KB Created: 2021-02-15 02:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e09d983f431e9a7cf2bc3520584c0aca SHA-1: b5ccd9092316c616e4df16161b6dc134c26645ec SHA-256: daaec1776b1b78395a7423048f40782ea7c5b49c1d492b669851bebba235170c
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=kurio+7+tablet+firmware+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448113/normal_5fed6d07ddf69.pdfIn PDF document text
    • http://insta-sale.site/699972092346fvgr.pdfIn PDF document text
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/1312565.pdfIn PDF document text
    • http://cccckkkkkdd.space/xifabuwufodavalogaraludad65zv.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/jJhdMja/fulasanowefajusa.pdfIn PDF document text
    • https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/4950813.pdfIn PDF document text
    • http://lightly.store/wanijeneb25c8i.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/mcgchiI/dozabakinumijuxegewu.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/xYOTMgf/musicas_internacionais_anos_80_90_e_2000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_601eed5d15786.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463803/normal_5fdcdcb56b836.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/dezekawasumukatabep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_600abc80bb641.pdfIn PDF document text
    • http://prolac.ru/letter_template_address_datenejwi.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/ajdSPRn/tafoxubukabifo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://berowajadodi.epizy.com/letupav.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73E 5156 bytes
SHA-256: e02947e0a424ab1987b302c83f488a749902c8053b1bca22e564c76cb512b26a
font_01_sfnt_off0000e8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CE 11928 bytes
SHA-256: fe45cdfe39eb9b25371e67354e8087c7e17a0b53ed81fd4ed6b24db28fb5c2f4