Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c1c1e77b0fa9b1…

MALICIOUS

PDF

78.1 KB Created: 2021-09-18 19:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a2269b8a408aabae81704aea48639ed3 SHA-1: aad386ca97e0aaf3309f837168300f1dbc607bbb SHA-256: 09c1c1e77b0fa9b18939a19a236c458a52b8a4a4fe6190689fa4363216b0c933
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to compromised WordPress uploads and other disposable hosting sites. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7431

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 http://valentine.tutaylamhet.com/storage/ckfinder/files/21628182575.pdf
    • http://hnkingdee.cn/Files/file/202195123439.pdf
    • http://osmed.cz/app/webroot/files/files/bodogoforowukomuve.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16139077db2db4---29272423486.pdf
    • https://rlmahtani.com/userfiles/files/vebonokoxonaxudo.pdf
    • https://kovrdom.ru/sites/all/sites/default/files/file/14322829405.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/720f213b9a2e4ba8fbe4d1b21fb54e84/xuluf.pdf
    • http://toyotacri.com/userfiles/files/nopojugufupex.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc67a88693.pdf
    • https://jechrina.gr/FCKeditor/userimages/file/fujipemotuxuxokijelowive.pdf
    • http://files.ibiza-ferien.de/file/pefixirevofuj.pdf
    • http://hongdanhaudio.com/luutru/files/67614866579.pdf
    • http://king-pro.com/userfiles/files/59094134348.pdf
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/kegoxiseramadoxifo.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161366788c9fe9---dudisezuxulizexozem.pdf
    • https://ctcitsupport.com/media/files/63057555071.pdf
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/de7cba6256ef72480c9740dacea7ae76/78230028600.pdf
    • https://wodepcb.cn/uploadfiles/files/94990891021.pdf
    • http://ancheng-medical.com/uploadfile/files/bemurejironoger.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133fecab2061---32563166854.pdf
    • http://lonerangerfanclub.com/ckfinder/userfiles/files/taxizafaxexe.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ee243cae79---sabajinalimotun.pdf
    • https://shreegroupco.com/userfiles/file/37513238495.pdf
    • https://mimpishio.com/contents/files/76517456734.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=spooks+cast+season+10
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eadf.bin
37cc2ea4d3bedaa8525e1330281a56a90fcad88f5a183081b93d849506c4e486		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEADF 18192 bytes
font_01_sfnt_off000119d3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119D3 16792 bytes

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