Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc49827f52b46e96…

MALICIOUS

PDF

58.2 KB Created: 2021-03-09 17:13:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 63227d43521db2047d8e94516b4564c1 SHA-1: 56899c9de0074fe6b4c321abb5cc3ef579e652e8 SHA-256: bc49827f52b46e964cd4505705be3f47f1561fd38f9d4e41a839e0173486022d
124 Risk Score

Malware Insights

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

The file is a PDF containing numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and the link farm heuristic suggest the PDF's primary purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6870

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
  • 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
  • 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://leonvi.ru/strik?utm_term=us+history+questions+trivia PDF link annotation
    • http://goloszauniver.fun/zovizut61zv.pdfIn PDF document text
    • http://edevletorg.com/belefqg8no.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/jisapebotewegise.pdfIn PDF document text
    • http://lg-copyright.com/bojeran1w9.pdfIn PDF document text
    • http://counterman.ru/le_management_des_risques_de_l_entreprise7dzt2.pdfIn PDF document text
    • http://dresdenpharma.ru/16071383225pggii.pdfIn PDF document text
    • http://xopivodez.22web.org/fosonitibafiwone.pdfIn PDF document text
    • http://arthromedshop.xyz/how_much_do_criminal_defense_lawyers_make_in_new_yorkd9l40.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/panasonic_kx-tga939t_headset.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/jhGighf/furious_road_movie_2018_cast.pdfIn PDF document text
    • http://wuwudikosegukem.mypressonline.com/schwinn_recumbent_bike_270_reviews.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/mezogagipubejutezojo.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/nel_tornado_coil_for_garrett_ace_250_review.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/heQhfhj/80316033672.pdfIn PDF document text
    • http://byseles.xyz/convert_into_html_using_pythonu1q2e.pdfIn PDF document text
    • http://zodelem.mygamesonline.org/lobufebo.pdfIn PDF document text
    • http://tebivumiwutuf.iblogger.org/what_personality_type_is_a_mediator.pdfIn PDF document text
    • http://zerowegujij.onlinewebshop.net/used_john_deere_214_for_sale_-_craigslist.pdfIn PDF document text
    • http://gakamaxoluzes.atwebpages.com/tesidavezafivokofowitafa.pdfIn PDF document text
    • http://riberudedanute.epizy.com/vekinikov.pdfIn PDF document text

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