Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af597a6fce89ea4…

MALICIOUS

PDF

78.2 KB Created: 2021-02-27 12:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6e50b5dada822417e2a6530baabd8a93 SHA-1: f7a8a2c9d48855b4a5540b9ef8f3d070b64e691d SHA-256: 8af597a6fce89ea437db87803e729ae6e79f637df9b86cafdaddccbfcf931212
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, indicating a phishing or trojan threat. It contains numerous external URIs, suggesting a link farm designed to redirect users to potentially malicious sites. The presence of embedded URLs and the nature of the heuristic firings point towards an attempt to exploit user trust for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=ti+nspire+software+license+number PDF link annotation
    • https://cdn.sqhk.co/rolaravez/yihovie/liverpool_football_club_latest_news_daily_mirror_online.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/betazojalodogilofud.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/how_to_install_humidity_controller.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/outlook_365_quick_reference_guide.pdfIn PDF document text
    • http://xidasetetobuge.scienceontheweb.net/vezivologetobagebok.pdfIn PDF document text
    • http://arm-watch3.club/wezisobitetixirki1vp.pdfIn PDF document text
    • https://cdn.sqhk.co/fudopalizew/1fcjghe/hit_songs_of_the_80s_list.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/gefumuvafosodirovebalasa.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/work_from_home_software_development_jobs_in_bangalore.pdfIn PDF document text
    • http://instofficial.online/97424437476x9bot.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/kofejis.pdfIn PDF document text
    • https://cdn.sqhk.co/pevukoza/eihswN6/lekupijugewuwafinoba.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/why_is_rosaline_important_in_romeo_and_juliet.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/DIhaWhi/free_football_streaming_apps_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/zYiiHjh/toxemefupetikuta.pdfIn PDF document text
    • http://migerov.xyz/dizarasonumofom2fa8y.pdfIn PDF document text
    • http://bestunew.xyz/keloliliwevorimopalht05.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixarewujedel.atwebpages.com/does_huawei_nova_7i_have_google_chrome.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/litezoxejelimu.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/sefizutufijasutux.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/vepekomuguwukabobi.pdfIn PDF document text
    • http://noratev.myartsonline.com/rebutilagexerekatov.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_off0000f33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 5344 bytes
SHA-256: 1aca7a6ab50bfc07095f235122d188a167ce14a2e762d2b80350ee5aa372e29e
font_01_sfnt_off0001055d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055D 10496 bytes
SHA-256: 55340dd5305a5e28b52437a62df192b282a675cb357d81d00beb75d72b3ee33f

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