Malicious PDF — malware analysis report

Static analysis result for SHA-256 019d92282d706edb…

MALICIOUS

PDF

240.6 KB Created: 2021-03-30 05:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c07a00513eb2f680fbc3eb61cddb88a9 SHA-1: f79fb5e693ee46a121a863cef9f430676cf9e50a SHA-256: 019d92282d706edb734feea48e86a09ccc9a890bb3cb8516153f19f989db7524
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely a lure for downloading a malicious payload. The document body, though heavily obfuscated, suggests a pretext related to downloading a technical book, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://pelibifir.ru/award?keyword=arquitectura+de+computadoras+morris+mano+pdf PDF link annotation
    • http://epipog.com/play_store_install_karna_hai8ckod.pdfIn PDF document text
    • https://cdn.sqhk.co/sonometa/OOOhhhb/jakixamuw.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/dq4hjtE/sinirulewu.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/iibjcji/smash_bandits_racing_apk_mod.pdfIn PDF document text
    • http://xewosaxebojufir.iblogger.org/what_did_the_sour_wine_represent.pdfIn PDF document text
    • http://zefujixa.mywebcommunity.org/craft_fair_vendors_needed_near_me_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/jbgjl6L/sexonubi.pdfIn PDF document text
    • http://dunodipike.sportsontheweb.net/autoestima_unam.pdfIn PDF document text
    • http://neximegimukik.iblogger.org/panigofarumoro.pdfIn PDF document text
    • http://zaralutodunuwa.66ghz.com/51834114800.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/vUicgfP/16974262204.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xexojonorowo.epizy.com/49368631474.pdfIn PDF document text
    • http://gusojabij.epizy.com/99335295364.pdfIn PDF document text
    • http://sobogasitizi.epizy.com/galacticraft_rocket_guide.pdfIn PDF document text
    • http://maligufaribez.epizy.com/cv_template_uk_free_online.pdfIn PDF document text
    • http://bisaboziriguwu.rf.gd/pujetilalunonedodavosibo.pdfIn PDF document text
    • http://nilidax.epizy.com/icare_data_recovery_pro_free.pdfIn PDF document text
    • http://gajedimigifupet.epizy.com/the_cask_of_amontillado_questions.pdfIn PDF document text
    • http://redusaboj.epizy.com/amomum_compactum_information.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_off00037476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37476 5384 bytes
SHA-256: 05f1484d24eac6ab49e52693c95b42801307bea77baf1d451d70451468db99b1
font_01_sfnt_off000386b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386B2 14008 bytes
SHA-256: 459735b38f52680ccd2e089839321ffebea5492277d5521673f671895f0e44a3

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