Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea55b89079c6eb41…

MALICIOUS

PDF

80.2 KB Created: 2021-04-07 05:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9cc0a22d7a1914bae711399cbfbc23d9 SHA-1: 2320f09dd04fcd4b2c5591e3a2d71fc314f1bd5e SHA-256: ea55b89079c6eb41e682a32dfab7ecc7928014ebb7f046635b7f94f9d0cf598c
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a payload or visiting a phishing site. The document body, though heavily obfuscated, contains text that could be interpreted as a lure. No scripts were extracted, but the presence of embedded URIs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=gambler+seal+online+guide PDF link annotation
    • http://tesocoin.online/73268806607hsr23.pdfIn PDF document text
    • http://wizapivizesib.mygamesonline.org/occupational_outlook_handbook_download.pdfIn PDF document text
    • http://jewlgems.com/7744342567627cyz.pdfIn PDF document text
    • http://beautytopshop.site/v_shred_custom_plan_reviewszx5b6.pdfIn PDF document text
    • http://notdull-eng.online/whirlpool_top_load_washer_error_code_ulnki7d.pdfIn PDF document text
    • http://lozhobelir.space/bismillah_rahman_rahim_in_arabic4mamh.pdfIn PDF document text
    • http://namedaun.fun/mr_bechara_film_songip882.pdfIn PDF document text
    • http://fortysgjdk.fun/tamepukezufulojemuxuzopih4afz.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/christmas_music_and_movement_activities_for_preschoolers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://somifisuvukibuk.onlinewebshop.net/site_analysis_report.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/54104410074.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/2444912021.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/49808266494.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/wulaburajelinojo.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/castle_learning_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/mahabharat_krishna_flute_ringtone_pagalworld._com.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/oriflame_catalogue_april_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/polokekobibexunideseguki.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/medicare_benefit_policy_manual_chapter_8_section_30.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/how_to_become_np_from_rn.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/61770534781.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_off0000fcfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFD 5316 bytes
SHA-256: 72deb32d35e294df81e418b600b68df8ec9f5237347e223ddec917a95007d222
font_01_sfnt_off00010ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF1 10724 bytes
SHA-256: 81cdb515d5c5ab6d381e43311bdb31538d5237c7ebf637f2b371e29c48b64b9b

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