Malicious PDF — malware analysis report

Static analysis result for SHA-256 062b08d15f5af0a8…

MALICIOUS

PDF

62.3 KB Created: 2021-10-09 00:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 57a0d1f7652c54210720d675a0c30a30 SHA-1: da90d242cfa5a11eecbd4e1acc842842743c86b7 SHA-256: 062b08d15f5af0a89213e586af8c9c2b9ba627652f4b1aad3ab8161df265c39d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The presence of ClamAV detection and ML classification as malicious, along with heuristics for compromised CMS uploads and SEO disposable link farms, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6042

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://philabc.ru/uplcv?utm_term=zagros+mountains+on+world+map PDF link annotation
    • https://aradovan.com/userfiles/file/vexevudebolikez.pdfIn PDF document text
    • http://balmybnb.com/t/tutorfirm/uploads/ck/files/84924001824.pdfIn PDF document text
    • https://pilot-nav.com/ckfinder/userfiles/files/25788402490.pdfIn PDF document text
    • http://studiolorenzino.eu/userfiles/files/goboripazimasomekete.pdfIn PDF document text
    • https://karjerastests.bankai.lv/ckfinder/userfiles/files/lojulozedevipolopawi.pdfIn PDF document text
    • http://epwuae.com/userfiles/file/lusupiv.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/40332830016.pdfIn PDF document text
    • http://rockbond-aac.com/id-admin/fckImages/file/7691636876.pdfIn PDF document text
    • http://kkslavicin.cz/sites/default/files/file/44037878263.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16159e80754f4a---wibufugeraziw.pdfIn PDF document text
    • http://armanetti.com/images/kenimaxodugumogeg.pdfIn PDF document text
    • https://akvaguru.hu/user/file/lisem.pdfIn PDF document text
    • http://seamacros.com/upload/file/korawalakukexobez.pdfIn PDF document text
    • http://slovoveri.org/userfiles/50563414847.pdfIn PDF document text
    • http://asliev.coco1490.com/upload/file_folder/file/94270862667.pdfIn PDF document text
    • https://at1-turbo-j3t.com/contents/files/28204837830.pdfIn PDF document text
    • https://markapin.com/calisma2/files/uploads/27032327276.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161389ca4db784---wovekuzesorafusokela.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/761096b2f6324f599a32de4f52c2c019/jexazu.pdfIn PDF document text
    • https://wic-net.com/userfiles/file/xelowovoketapowamotuvutes.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/rolewevogaf.pdfIn PDF document text
    • http://colorfusion.us/admin/images/file/65712652209.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/22890783227.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/19240981716.pdfIn PDF document text

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