Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5470a2969dd6545…

MALICIOUS

PDF

62.3 KB Created: 2021-09-07 02:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ee7027cb82cda080d126acf10afa0446 SHA-1: 0605f174fa2ca9920fa6c3d5ca5ef6d98e313644 SHA-256: f5470a2969dd6545c2bb62c4d025bf4f9271c5773b18d774657d6c3aedde3c42
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress installations or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7260

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://istanajp.com/contents//files/jikopozafuz.pdf In PDF document text
    • http://hi-techfiber.com/userfiles/file/wesovemuferof.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be9de0a0511---66924501837.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/luruwonolovu.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079115ee04be---mozitowuz.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/zinebinekagagezu.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/9f87fd646576052a5e0476174ed80177/66489985598.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c87f00aa---64161320495.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/babarutota.pdfIn PDF document text
    • https://mr-alian.com/upload/ckfinder/files/jadorozos.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/4528583530.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/kijexugupezewojironutu.pdfIn PDF document text
    • http://boek.se/bilder_umeny/File/gevuzokumaseroxapazebupun.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be432fdaed5---81039179302.pdfIn PDF document text
    • http://xn--m1age8bh.xn--p1ai/files/file/94579013242.pdfIn PDF document text
    • http://firstcuwire.com/file_media/file_image/file/65830742035.pdfIn PDF document text
    • https://cncunse.com/d/files/51702043930.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/bovuromoxikuzosated.pdfIn PDF document text
    • http://remoteyourstaff.com/calisma2/files/uploads/tutugob.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/2a1db57039ef8a2e4c5a7681641bc632/25157948927.pdfIn PDF document text
    • https://reitinguok.lt/userfiles/file/33248923898.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/29c2bbecb0c48c9e3d7fe25e12406edf/velawumunazuduvawizok.pdfIn PDF document text
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210815043127.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/gufutusekidema.pdfIn PDF document text
    • http://agrostroi-proekt.ru/ckfinder/userfiles/files/rumup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=creation+site+internet+pdfPDF link annotation
    • 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_off0000c779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC779 10476 bytes
SHA-256: 5155800fdb5e58dc82069d063144baefcec1cb489c7de08bcfcdc36fd3c7a056

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