Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e065b01bf0420c4…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 18:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 32f57728b51c7cff691b671f0a223f14 SHA-1: 2b5a5e8e6bd80f288f51455304636a9560eb3b05 SHA-256: 9e065b01bf0420c4ca7d6bf1050f89c76b6aab46ba0f309ca26ec1e881f502cd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://yafferge.ru/wix?keyword=worksheet+1+significant+figures In PDF document text
    • https://cdn-cms.f-static.net/uploads/4494136/normal_6038784b74d6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489050/normal_602b92fe0ba35.pdfIn PDF document text
    • http://gta-msk.ru/boss_gt_1000_core6b6tg.pdfIn PDF document text
    • http://uplrezina.site/fortinet_fortigate_40c_configuration_guidesyzpx.pdfIn PDF document text
    • http://gelchlen.fun/95_s10_brake_light_switch_wiring_diagramald6o.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/zic7rgc/79398765846.pdfIn PDF document text
    • http://magnifioco.site/nagakigetw75j.pdfIn PDF document text
    • http://ig-objectionform.com/lagu_bandung_lautan_api_versi_reggae9s835.pdfIn PDF document text
    • http://republvinb.fun/3343216141687111.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wonanikapudidak.atwebpages.com/dijezagunon.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_off0000dfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 5240 bytes
SHA-256: 16de52b9acfe54b09ef2a544bef8da4e5b643f5b74a2550147b8d8da1dac271d
font_01_sfnt_off0000f1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DF 10336 bytes
SHA-256: 84be9c4b1ecdad9217e6d31a9d9699683ea6a9d7d184f2ab3c666fc6bce4a9da