Malicious PDF — malware analysis report

Static analysis result for SHA-256 24aace14c6c10bd7…

MALICIOUS

PDF

93.8 KB Created: 2021-08-10 13:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 118816cc613ca64f812aa8da33983cb6 SHA-1: c80e47200d37ee6a49ea6f8df8093f9e0a8469fe SHA-256: 24aace14c6c10bd764a5b06b0082d176ee6bf7f0ae7496c67bb554c073b8bd74
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file functions as a link farm, containing numerous URLs that point to websites, many of which are hosted on compromised WordPress installations. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. No scripts were extracted, but the embedded URLs and the nature of the link farm indicate a phishing or distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4260

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://smidgel.ru/uplcv?utm_term=15+ejemplos+de+movimiento+circular PDF link annotation
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/608bed42808223ef373099079899f61c/banasasipixabixanatipa.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xirodavobez.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ce227f9a74c---dunigabipasagitigop.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/blf9p7lpgef8goq5vg72s8j3md/83195656602.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c96e22c7b5---waxijonebemovapuvifew.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/16425312526.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160899ffa97405---67147757601.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/64915137408.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af2b7eb643---ranunumeponixowiles.pdfIn PDF document text
    • https://bbmint.com/userfiles/file/sikusipojejezisasexeli.pdfIn PDF document text
    • http://nhahanghienminh68.com/upload/files/wezuvavetulutati.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/50720660749.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/zinuvi.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/91803153625.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/ac6c5898d40a0db339f85f50a0f44993/43965361414.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/cge0b9fei9ssnkbg8fdggkf6bp/75988707033.pdfIn PDF document text
    • https://fultoys.com/userfiles/87500449795.pdfIn PDF document text
    • https://dhesient.com/media/fawavizudux.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/tetukuwiwekev.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074d5de4dc81---tejuxibenijowovute.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/26cae22b3b68f80bab92043c9ddc38b8/dusebinuvopewetekokezin.pdfIn PDF document text
    • http://ccsl.asia/files/lagujojegidided.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/9ddc2931137b37686bfcf96ad6f2327e/36859925349.pdfIn PDF document text
    • https://studiovizia.com/webroot/img/content/files/96842173677.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/29864448327.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001282d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1282D 19604 bytes
SHA-256: 86c3d592f0948b32121765adca2907589865ec40619a4feabfac50ffc6c50275
font_01_sfnt_off00015a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1