Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4b3f5974a40af2…

MALICIOUS

PDF

87.8 KB Created: 2021-03-31 10:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6605bfd8bdfc7418d24c1d147b099d9e SHA-1: 64bd6ea0473f2378dc3431163876336fbef32234 SHA-256: fe4b3f5974a40af2a82ee8af9ba5ef04255fe5e01edfff8c84c16d38c172a059
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 intended to host a malicious payload or redirect the user. The document body, though heavily obfuscated, suggests a lure related to 'strategic planning'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=planificaci%25C3%25B3n+estrategica+pdf
    • https://cdn.sqhk.co/givifevulo/pgfwXie/2776039099.pdf
    • https://cdn.sqhk.co/jurugaguvedu/jhbQjcK/tricky_riddles_with_answers_hidden.pdf
    • http://dehydratedoriginalgoodness.com/25993598229j97bj.pdf
    • http://polnews.xyz/smooth_camera_animation_in_blenderrg3dc.pdf
    • http://crawlmqyu.space/54204057724dimrb.pdf
    • http://stavki-na-sport.site/90023465298e3uf6.pdf
    • http://winoraama.space/full_form_of_aka_in_chat2s0v7.pdf
    • https://cdn.sqhk.co/rijunawep/dxjeFii/pemuganexikujigume.pdf
    • https://cdn.sqhk.co/pidagasew/jjiifie/kubaro.pdf
    • https://cdn.sqhk.co/remozemot/xLiJPha/fasowasuvo.pdf
    • http://all-system7.club/experience_cv_templatek80nd.pdf
    • http://rating-bookmaker.ru/pdf_measuring_tool_ipad9jkjh.pdf
    • http://a-trvl.ru/focusrite_scarlett_2i2_3rd_gen_usb_cable13pla.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://28a90398-13b1-4b58-b54c-ed045a6bddf2.filesusr.com/ugd/7e9e1f_e11ed15230eb4e2d8169bbf7aedc02dd.pdf?index=true
    • http://jolavewavesuj.epizy.com/wojop.pdf
    • http://nexoluximil.rf.gd/honda_rebel_500_for_sale_houston.pdf
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_93b89a430b04429d939e779c573129fd.pdf?index=true
    • https://9d3edb37-11ce-4d87-b861-4f8d850d55a0.filesusr.com/ugd/0d2aa0_be81f1651043449dba11afb063249e67.pdf?index=true
    • http://gerevukome.rf.gd/ap_calculus_slope_fields_worksheet_answers.pdf
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_449e99722d6340f896637db41a8c154a.pdf?index=true
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_d5dd842f56864abe8a5c3a0f648ea4d9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109df.bin
607d9491253fe7aafad708844f40a56388cbaeb8e3c7ac0e031bce9fc93f355f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109DF 5136 bytes
font_01_sfnt_off00011b5b.bin
071574a3b64406e6391c7b4a6d5ccf11e6dc99ddde0fadf602db4339d80dda4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5B 11808 bytes
font_02_sfnt_off000141ba.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141BA 4324 bytes

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