Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb7854ccd23d92c…

MALICIOUS

PDF

62.1 KB Created: 2021-09-20 04:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e2ac0ed76bac20d90319e82d4d2c658f SHA-1: cf9470ac63184dada769a948b9085e141e4dcacb SHA-256: 5bb7854ccd23d92c525e21ec939aee0120bac14707c36946da44ad5bcaddaa57
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs that point to various domains, many of which are likely compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using non-clustered link farms on disposable hosting, suggesting an attempt to manipulate search engine results or distribute malicious content through a large number of low-reputation links. The presence of these links strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://formel1vermietung.de/userfiles/file/44195327681.pdf
    • https://wisestudentz.com/userfiles/file/liwilasibojenemolezusuw.pdf
    • http://pecsimutargygaleria.hu/files/file/gakisafebagiki.pdf
    • http://studio-rivetti.it/userfiles/files/gubarijit.pdf
    • http://fcraregistration.com/UploadedData/file/zitodobad.pdf
    • https://oriental-kitchens.com/userfiles/files/bonijeg.pdf
    • http://ehoron21.mn/uploads/files/66693403703.pdf
    • http://signauction.net/userfiles/file/remajow.pdf
    • http://ortopediaszombathely.hu/editor_up/mapuvujojogexab.pdf
    • http://arqing.es/ckfinder/userfiles/files/rarimevebopomokuwofojebig.pdf
    • http://canadianrockies.info/files/file/48172003650.pdf
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/h8c4kbj4rehh28oo7ul7ncsoq4/25936787966.pdf
    • https://bike-accessories.supersites.gr/content/ckfinder/files/61844614769.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143d6d7e2923---86650222604.pdf
    • https://jmtours.co/aym_image/files/vilupekimozufij.pdf
    • https://hankilfood.com/upfile/files/73139835176.pdf
    • http://aquatherm-graz.at/files/kulidegewikabidaze.pdf
    • https://pointwebhost.com/calisma2/files/uploads/22249335122.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/45d342eac7271fd73789bf7a4729dbfd/83736036281.pdf
    • https://artistprasanna.com/userfiles/file/70702897151.pdf
    • http://akkoryazilim.com/userfiles/file/6896918289.pdf
    • http://ingatlantv.tv/userfiles/files/zudomililizibozomel.pdf
    • https://istanajp.com/contents/files/63878303957.pdf
    • http://ideviceplus.nl/app/webroot/files/userfiles/files/gafuduwasetikareriwoda.pdf
    • http://ituor.ir/basefile/chartermeinfo/files/toworuwerirusademajofib.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=pokemon+soul+silver+cheats+openemu

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