Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f86562f498da03…

MALICIOUS

PDF

89.3 KB Created: 2021-03-15 05:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a57c9724bddf975d8f6b6c0d4ea4cf25 SHA-1: b782ec85e47f28b0e6092033f8f380d0152c6c51 SHA-256: 99f86562f498da0327a5f2456e62888a6b04a14f9969badb0f8b2b6488c00931
126 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 numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('xezojetit.ru') that is likely used to host malicious content or redirect users. The PDF structure and the presence of external URIs suggest an attempt to trick users into visiting a malicious site, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://xezojetit.ru/award?keyword=antologia+de+cuentos+breves+y+extraordinarios+pdf PDF link annotation
    • http://sazavenegot.22web.org/21224199639.pdfIn PDF document text
    • http://gsmall.space/linovivezoledevivebeaoaaz.pdfIn PDF document text
    • https://vovamujif.weebly.com/uploads/1/3/5/3/135318660/817429a45b87.pdfIn PDF document text
    • http://uchebnoe.website/dbt_therapy_tipsnt9ek.pdfIn PDF document text
    • http://activa-fb.com/rujomaghxy87.pdfIn PDF document text
    • https://dibozavo.weebly.com/uploads/1/3/4/5/134501923/roxabam-xatipagugitiz.pdfIn PDF document text
    • http://salebox.shop/enfield_grammar_ofsted_report_2017u9d94.pdfIn PDF document text
    • https://mokufanogokotim.weebly.com/uploads/1/3/1/4/131406807/gilowuguruxewomu.pdfIn PDF document text
    • http://bixifofagowezi.22web.org/business_plan_proposal_examples.pdfIn PDF document text
    • http://tradestaroffice.com/korean_learning_books_for_beginners6y5ws.pdfIn PDF document text
    • http://gojazot.22web.org/pavimeterajixawilipetat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/setikizo/irf540_mosfet_datasheet.pdfIn PDF document text
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_431caad327d24d6190b1b4fe98126b8f.pdf?index=trueIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_69217eda48ce4af5b4779dd4d77c175c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/59093201746.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/gipole.pdfIn PDF document text
    • http://wobuwikag.epizy.com/english_grammar_cheat_sheet.pdfIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_8ed13fb946a445ec9a07f0eb284069fa.pdf?index=trueIn PDF document text
    • http://virafesejasaxi.rf.gd/online_java_date_format_converter.pdfIn PDF document text
    • http://jinufezep.epizy.com/76162052579.pdfIn PDF document text
    • http://banitazivi.epizy.com/zewufakalebavugovulewati.pdfIn PDF document text
    • https://8d5bcf17-53f2-4f21-b585-7a27aef14131.filesusr.com/ugd/7baf93_8fdee47c094b4f9294bc62237feef114.pdf?index=trueIn PDF document text
    • http://befojarariwowab.epizy.com/puffin_browser_pc_free.pdfIn PDF document text
    • http://kivazakej.rf.gd/cidco_online_application_form_2019.pdfIn PDF document text
    • http://pirefalanife.epizy.com/the_new_case_for_gold_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/carti_astronomie.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/genogram_template_microsoft_word.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB1 5564 bytes
SHA-256: 71dbae0e94f5b6d3d48150d1d5cc9ae7943b49767bd14fb901d140069c8b32a6
font_01_sfnt_off00011fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAD 13028 bytes
SHA-256: 47f17938d7937a14d45a3c615135d52d83982f2a1294b35d7a9e5f323ba0c35b
font_02_sfnt_off0001486e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1486E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.