Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9130f8557dd5019…

MALICIOUS

PDF

60.9 KB Created: 2021-09-14 09:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 684436bf6de477e0b6b7f421cd16b9a0 SHA-1: f895b43769a75c2f4f9fbae0e71ad829e8717249 SHA-256: a9130f8557dd501995a9101c21b2f49cc7f9cf1790359ca4a9b0bd9c628be5ae
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6927

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://allytemp.ru/uplcv?utm_term=comic+strip+online+creator+free PDF link annotation
    • https://synersys.fr/contenu/file/mesivimurebasiwepafi.pdfIn PDF document text
    • http://bhartiyambeohari.in/userfiles/file/63231559792.pdfIn PDF document text
    • https://mangalargalux.com.br/ckfinder/userfiles/files/48163444146.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/78412239163.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/73c6807799dd5c5575b0ea0a9bafcdbc/jijetogedos.pdfIn PDF document text
    • http://baozhaopharm.com/upload/files/22044742513.pdfIn PDF document text
    • http://solarexperte.ch/fckeditor/editor/images/file/84219735034.pdfIn PDF document text
    • https://phm.vn/upload/files/jaxipasulegogijalizegome.pdfIn PDF document text
    • http://wgadget.com/file_media/file_image/file/79915283884.pdfIn PDF document text
    • https://dp-engineers.com/admin/userfiles/file/xamab.pdfIn PDF document text
    • http://www.dogwoodagility.nl/ckfinder/userfiles/files/22912319595.pdfIn PDF document text
    • https://tonere.shop/app/webroot/files/userfiles/files/34885675321.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/xasus.pdfIn PDF document text
    • http://daiichihousing.net/uploads/news_file/70949469900.pdfIn PDF document text
    • http://westhollywood.ilovepokebar.com/uploads/files/dulipofawutatoferolubopud.pdfIn PDF document text
    • http://yds-wcv.jp/free_images/files/37851958774.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/c42b6df99fd3e515bc82e8798a401aed/jususesimasoteka.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/vezedorejajuvamuno.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401e5c9274d---zanakukaluratu.pdfIn PDF document text
    • http://csa.china-led.net/static/editor/ckeditor/ckfinder/upfile/files/73570436305.pdfIn PDF document text
    • https://nedimgame.com/calisma2/files/uploads/zurusak.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613bdd8b47279---7653674162.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/90915098521.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16132568520810---2059499440.pdfIn PDF document text
    • http://gemmacapitalgroup.com/foto/file/jogawojofamadapofejarab.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD760 10672 bytes
SHA-256: 092195890ba45024f91a15412b5890c0729221089dba2fa54d668e914ccf610e

Open this report in the interactive analyzer, or submit your own file for analysis.