Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa206e73b1267d48…

MALICIOUS

PDF

63.7 KB Created: 2021-09-06 11:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d316b00b767e4813aa56ee1107534e5a SHA-1: f43fc2f8dbcd8635f2b0f51fa5a07a201ac6d191 SHA-256: fa206e73b1267d48f1264889538939c69c693be7228f465021bafafe64f931c6
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to various websites, some of which are hosted on compromised CMS platforms. The presence of these links suggests an intent to redirect users to potentially malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9183

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://chcial.ru/uplcv?utm_term=contempt+of+court+act+1971+bare+act+pdf PDF link annotation
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/fb9e1696690ca8b5d9b0e4a39bed1a2f/58354254264.pdfIn PDF document text
    • http://mertlakustika.cz/images/pages/file/38524820809.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/mejuzasosifotev.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aa33a06d982---90410434673.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/80348d3ad8658bfe41b42c5d42b7234a/98755364668.pdfIn PDF document text
    • http://dijladentalcenter-qa.com/userfiles/file/10802431633.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/3782222263.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/puxogotolebiborupevovep.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/nmie15l2ruunop8mmqn05scsf2/kawukexuwojog.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-5/file/55852081741.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/44321220210.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/1fadbf513c722dd143467d477b71e92a/nazinigewigo.pdfIn PDF document text
    • http://www.smartlandgroup.com/ckfinder/userfiles/files/mulepariziwodimogamururap.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/milejezogukanuv.pdfIn PDF document text
    • http://merwepizza.com/upload/file/wuganovuv.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/sidobobo.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a97b9df67d---1138884736.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/3919224761.pdfIn PDF document text
    • http://webelievedin1984.com/clients/6/67/676624d6593aa512bfa6e10e765af00e/File/sezefaber.pdfIn PDF document text
    • https://saikekanglun.com/filespath/files/20210827070633.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/77438384218.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/tuzogerubobugivatekalimu.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1e11dcb90f---lekotavixaxe.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/21829cf85da4d1140d711c798d4904a7/somovejukiwobidukeles.pdfIn PDF document text
    • https://bulgariapools.com/contents//files/17317377978.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_off0000e538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE538 11016 bytes
SHA-256: d68009b29cfc5b265ece48580c05f15c1752e3278765a43b2b40d76d1c65aaa7