Malicious PDF — malware analysis report

Static analysis result for SHA-256 704de8f2a4aed592…

MALICIOUS

PDF

59.6 KB Created: 2021-09-21 07:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6ac5a2ed0fcb87430ae312cb690b568e SHA-1: fb8ee3906cda482beb3d2bed8c6dc1ab48a9e7dd SHA-256: 704de8f2a4aed59288740fac905f0a9d64d70b94e8f3e5424cb2fcc57fb7a683
154 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. Heuristics indicate it functions as a link farm, directing users to multiple external URLs, some hosted on potentially compromised CMS uploads. The presence of numerous unknown URLs suggests an attempt to distribute phishing content or further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5269

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://autosoftware.company/autoresponders_images/files/bupejifomu.pdf In PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/gajaxoge.pdfIn PDF document text
    • https://elesud.it/img_pagine/file/kuxaponek.pdfIn PDF document text
    • https://lenaoyunlar.net/calisma2/files/uploads/bofekelo.pdfIn PDF document text
    • https://onsale.social-push.cc/data/fckeditor/files/befejemumozarimuzolumuvaw.pdfIn PDF document text
    • https://chungangroup.com/uploads/files/202109060645269844.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/14609877181.pdfIn PDF document text
    • http://dinobajka.pl/Upload/file/vetudefekasuzifotogerama.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2200e22eb---donoduwilosopazanegi.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/161309311f3261---94390449725.pdfIn PDF document text
    • http://nwatchonline.org/userfiles/file/liwoliwobibix.pdfIn PDF document text
    • http://hypotekaprezamestnancov.sk/res/file/37249852704.pdfIn PDF document text
    • http://eshop-kocicinadeje.cz/files/file/murodabinapamunok.pdfIn PDF document text
    • http://mariondhuique-mayer.com/data/file/kuwunoligogo.pdfIn PDF document text
    • http://mitroc.com/userfiles/file/45778273773.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/25692333565.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146534c739da---jitirubor.pdfIn PDF document text
    • https://m-audio.vn/img-m-audio/files/kijawuni.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/161389d17d303e---rutelovijifanin.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/dasox.pdfIn PDF document text
    • https://blueparadise.pl/userfiles/file/24464486856.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/dikukijixigubegawurade.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/80472647859.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=australian+wedge+tail+eagle+wingspanPDF link annotation

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