Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe011384364e2752…

MALICIOUS

PDF

76.6 KB Created: 2021-04-18 12:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 27ae24c685a80260368324a723fdc233 SHA-1: 271a1e0cbab1c4b35907a97bcb7d3cbd6b893501 SHA-256: fe011384364e275219d2eb45d05cbdc1ddab0fd16f0303ec5da036188cc9b208
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, suggesting it functions as a link farm or a distribution point for malicious content. The presence of external URIs and the 'link farm' heuristic indicate a strong intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=black+and+decker+line+trimmer+18v PDF link annotation
    • https://cdn.sqhk.co/detatakev/Vkl9jen/block_craft_3d_mod_apk_all_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/jopuromug/FjehyhP/android_new_version_9._0_name.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453732/normal_5fffb23869491.pdfIn PDF document text
    • http://subejewumo.scienceontheweb.net/53115436425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470545/normal_600cad7b2a7b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475379/normal_5fe7f4ea041a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475872/normal_603d80940b242.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/gehbicj/koanga_discount_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415291/normal_603ceaa633fe9.pdfIn PDF document text
    • https://cdn.sqhk.co/naxudufejik/hiiho3C/lazejevovukadolajerep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lipitesagodat.epizy.com/at_what_temperature_does_a_salt_cell_stop_working.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/retovizexas.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/fapebapokedaredipak.pdfIn PDF document text
    • http://jadabibobageror.epizy.com/besebazo.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/kaworadonovedevexunugale.pdfIn PDF document text
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_5d8d23039c354c95a757414fd3b4c3fc.pdf?index=trueIn PDF document text
    • https://e8c82854-2a0b-4c0f-82de-bac600ce06e6.filesusr.com/ugd/d017d5_9e83c843fad04178997853d80ce9f0df.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/existentialism_is_a_humanism_quotes.pdfIn PDF document text
    • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_b66a4f7a79f145b1b72be932187d6132.pdf?index=trueIn PDF document text
    • https://63dbeab4-18c6-4677-a808-17cd77aec119.filesusr.com/ugd/963d80_b683eb511683407da1f34977277a89c4.pdf?index=trueIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_77fa81b7213849509734945a5a4dd2f9.pdf?index=trueIn 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_off0000eba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA6 5328 bytes
SHA-256: 8e989497827be93dde70cb7707e67079b9d056e2491ff3954d7e304d1e295a0e
font_01_sfnt_off0000fdba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBA 11600 bytes
SHA-256: 3f3129f4cff419cb0b84f75686781531f9560edc7ffbc62c27649c9271f835e7

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