Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b23b2434beb233c…

MALICIOUS

PDF

64.0 KB Created: 2021-09-19 05:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d6558f62e74f7859b59aa98d01e63d3c SHA-1: a754173633b426351cbd700274860430c4053c73 SHA-256: 8b23b2434beb233c81d0651762c5d0f3290dac4c9a63fa51c1aee8a7bb17e8df
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially malicious content. The heuristic firings indicate this PDF is likely a phishing or trojan delivery mechanism, with ClamAV specifically identifying it as 'Pdf.Phishing.Trojan'. The presence of external URIs and the link farm structure strongly suggest an attempt to trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5089

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://pixomot.ru/uplcv?utm_term=download+game+booster+pocophone
    • http://wienbildarchiv.com/upload_files/files/figadifoteridilipotoni.pdf
    • http://bestpokeya.com/uploads/files/rexovubuk.pdf
    • https://podimercrm.com/img/files/2770931821.pdf
    • https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/91397654905.pdf
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16132af38c249c---7661866908.pdf
    • http://gapp.fr/medias/files/23257420423.pdf
    • http://svenskafik.se/uploads/fckeditor/file/76546945148.pdf
    • http://jakpaisanestate.com/images/upload/files/xekiwisivogokovanoreximo.pdf
    • http://jamalcar.com/userfiles/file/43276555193.pdf
    • http://xn--9i1b14lzokxjcrti5um.com/upload/fckeditor/file/9196412321.pdf
    • http://sunwisechem.com/Uploadfiles/files/pewujiwodok.pdf
    • http://iccarrentals.com/files/file/67726668415.pdf
    • https://incoyun.com/calisma2/files/uploads/62359454600.pdf
    • http://thegioimercedes.com/upload/files/vekiribig.pdf
    • https://desco.scp.hr/files/zorekupowab.pdf
    • https://eravukappalpalli.com/userfiles/file/pewuxozapudotixopubuk.pdf
    • http://hanlacsclub.com/ckupload/files/52355974552.pdf
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613dfc82a8377---90669437792.pdf
    • https://lensprovn.com/ckfinder/userfiles/files/xinavewuledud.pdf
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/gorufosipite.pdf
    • https://netlandschool.cl/files/1588493896.pdf
    • http://csc0311.com/userfiles/file/20210909033615_ikbyfk.pdf
    • http://kleinschadenexperte.de/userfiles/file/38123426187.pdf

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