Malicious PDF — malware analysis report

Static analysis result for SHA-256 c647b5a1b6eeeba1…

MALICIOUS

PDF

42.8 KB Created: 2021-09-23 21:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: f457d69e62e06b2d75a3b19a1631ac32 SHA-1: 7657c5b7235a361ff247b4290a57b5c1a619fdee SHA-256: c647b5a1b6eeeba1e589555dc2f5299917db3dbbca833b30a07820756f5434cc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to disposable hosting sites, many of which are identified as link farms. The presence of a Minecraft-related URL suggests a lure to attract users. ClamAV detection and ML classification confirm the malicious nature of the PDF, likely serving as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

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 https://queure.ru/uplcv?utm_term=minecraft+1.16+xbox+apk PDF link annotation
    • http://bernendorf.ru/userfiles/file/xububaxomugar.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/91934042383.pdfIn PDF document text
    • http://around-sicily.net/userfiles/file/motumulinijivaruwibijope.pdfIn PDF document text
    • http://aucontecnologia.com/userfiles/files/totenomojomixefo.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/35698244213.pdfIn PDF document text
    • http://law885995.com/upload/fckimages/file/lujowuxenidalobivebut.pdfIn PDF document text
    • http://webursitet.org/Files/file/vesuf.pdfIn PDF document text
    • http://yetisirkaucuk.com/firma/files/lapuriwuvipafokafalanire.pdfIn PDF document text
    • http://huzatfokozo.hu/editor_up/jemuwosumiwunemilu.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/69783034834.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/dusosiwutakuxatibotisi.pdfIn PDF document text
    • https://defi128.com/userfiles/files/44157918763.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614c39fd20897---rorukefodadidobipawom.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f10b4288e2---gejitugi.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/ptt7tfuqp60h19s1oguprt5t57/98286119885.pdfIn PDF document text
    • http://djpress.pl/Image/files/16966496966.pdfIn PDF document text
    • http://portaldo.eu/contenuti/upload/file/dodekatepuxikenatomaxa.pdfIn PDF document text
    • http://girisimcilikproje.com/resimler/files/jobelapikofado.pdfIn PDF document text
    • https://guptajimarriagebureau.com/userfiles/file/58395270505.pdfIn PDF document text
    • http://caytrong.vn/Images_upload/files/2402260914.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/vimonunukivezukit.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53610891846.pdfIn PDF document text
    • https://jackinthegymtpe.com/uploads/files/202109051925537291.pdfIn PDF document text
    • http://debseven.net/UserFiles/File/vizawexutefasemujawitavev.pdfIn PDF document text
    • http://viviapalermo.com/userfiles/files/35835953068.pdfIn PDF document text

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