Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50bfde88184901c…

MALICIOUS

PDF

77.6 KB Created: 2021-03-16 15:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2a5d6d3f39bb273f882cdc44e3c6439b SHA-1: 5cc336bc10e90dc8c42385ee3c04cf801f8ec33e SHA-256: c50bfde88184901cb83558a54c2493e64c546e8efd21e71f9ebdaa37853b222b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malicious redirection attempt. The primary malicious URL identified is https://lozipotod.ru/strik, which is likely used to deliver a second-stage payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8909

Heuristics 4

  • 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
  • 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://lozipotod.ru/strik?utm_term=what+does+the+bible+say+about+lucifer+kjv PDF link annotation
    • https://kitowido.weebly.com/uploads/1/3/5/3/135348724/5271034.pdfIn PDF document text
    • https://suzexefovewav.weebly.com/uploads/1/3/4/6/134640410/reraxewuwex_balegebis.pdfIn PDF document text
    • http://littlenat.space/382130280202scwj.pdfIn PDF document text
    • http://devgm.design/moxigesokitodutabilobolzo00g.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/jbhgMge/ixl_login_with_clever.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/hOii83l/strikers_1999_hack_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_603447ba4f17e.pdfIn PDF document text
    • http://sun-italy.space/bloodborne_weapons_guide10dwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_604e53e97a479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445754/normal_602d9cb5bfd47.pdfIn PDF document text
    • http://pannochki-art.com/soviet_national_anthem_alto_sax_sheet_music0i7fr.pdfIn PDF document text
    • http://cheatyou.site/65044370758mvbe5.pdfIn PDF document text
    • https://cdn.sqhk.co/zonurubo/jjNZihk/dikogopidobiteremez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474211/normal_5ffd24db1998b.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/Fwzwfge/vefelixelorosorafugoju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_c357fe63066a493787f7d77770f64936.pdf?index=trueIn PDF document text
    • https://5de9ed01-d610-4143-94db-6f998645a8ce.filesusr.com/ugd/1d8bf6_2266bda147af4940add47dbb3605f580.pdf?index=trueIn PDF document text
    • https://3dd85f33-233b-4b3c-8e53-142bc8307eec.filesusr.com/ugd/8df890_68c41d60b61e4535b42e641afcccc8e5.pdf?index=trueIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_717055c384bf424eaef5e9abe425f286.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11254 5564 bytes
SHA-256: cb79370ac7be87134e521e4095a214b0d276205876fd6a7a3a428e50e49cc073

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