Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e19f8c11e137372…

MALICIOUS

PDF

70.6 KB Created: 2021-05-14 04:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7f9b5d69b716da6b327a95a2eca44f60 SHA-1: 3f3e207a1f7975dd42815ccdd298e2a883ae9fbc SHA-256: 1e19f8c11e137372c72e5b2bf32cc9822e3fd8617abe1fbebd22305196e02efe
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a deceptive lure related to the phrase 'what does your wish is my command'. No scripts were extracted, but the presence of external URIs and the overall structure strongly suggest a phishing or malware delivery vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://mezovuduw.ru/strik?utm_term=what+does+your+wish+is+my+command+mean PDF link annotation
    • http://mazers.fun/39842543570tsh7t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419828/normal_5feb607b1f79c.pdfIn PDF document text
    • https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/7cc03d4fca2.pdfIn PDF document text
    • http://pekokaxa.22web.org/zofulav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416510/normal_606c967410eb3.pdfIn PDF document text
    • http://laulu-go.ru/xusivilebmwtn.pdfIn PDF document text
    • http://vir-tus.com/what_is_relation_and_function_in_mathynvwy.pdfIn PDF document text
    • http://testertumentum.space/51132719409rn8ol.pdfIn PDF document text
    • http://erogan-encolumbia.site/supubulofiwifezimudawawivfulw6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450248/normal_6038fc9085e53.pdfIn PDF document text
    • http://dvigatel.guru/40_rules_of_love_elif_shafakd4tsj.pdfIn PDF document text
    • https://segawalapuk.weebly.com/uploads/1/3/4/9/134902876/xotowotil_digosidose_retajodugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471723/normal_602df02e59e0e.pdfIn PDF document text
    • http://scandisvet.ru/aprender_a_tocar_acordeon_de_botones_desde_cero24uy6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473375/normal_6058ccd214a8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xabasib.rf.gd/sinujixutonamogodur.pdfIn PDF document text
    • http://numorajigot.epizy.com/who_were_the_viking_gods_ks2.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_off0000d524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD524 5352 bytes
SHA-256: 7df3c7b7aa48043cd2ffa51beae0e9bb3a756b8ad16a77caa7089607d45476b0
font_01_sfnt_off0000e749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE749 11360 bytes
SHA-256: 7a8b0ede2b6fb43c6b217a6c5ab5ad462fcd42a3a5a7d5188bf56fb055ace22d

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