Malicious PDF — malware analysis report

Static analysis result for SHA-256 0019f149c6922c98…

MALICIOUS

PDF

70.7 KB Created: 2021-09-14 09:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 595033209e3ba1fac4b845e8d686b29c SHA-1: 2b468a64cae9966663470bae09ab9b0a74b1f305 SHA-256: 0019f149c6922c989c62107e693e7c620b9c23978066ee43cb3152a8957c5ae0
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary attack pattern involves luring users to external sites via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6717

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://synerhu.ru/uplcv?utm_term=how+to+check+my+processor+in+android
    • http://av-jet.ru/userfiles/file/zebetazeputeruwejugiguz.pdf
    • https://frutalmente.pt/site/upload/file/fetuzuxuwekawisedusiwu.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eff8de515b---25981878392.pdf
    • http://compagniaviaggi.gattinonimondodivacanze.it/themes/userfiles/files/xawolorakeb.pdf
    • http://druckmaschinenservice.com/uploads/fce/files/janibafibagizelat.pdf
    • http://p-jtech.com/userData/board/file/petilujela.pdf
    • http://daehwa.info/uploaded/file/13472945865.pdf
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/nuxugixafelufimuves.pdf
    • http://kenshopvn.com/uploads/files/tukegisazegavi.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16134aeca5cbaf---31121329975.pdf
    • http://www.verneteco.com/ckfinder/userfiles/files/55160039349.pdf
    • http://thoitrangvabaoho.com/Images_upload/files/34114726612.pdf
    • https://premium-house.uz/images/file/robadevutinatovara.pdf
    • http://lafenicealcamo.it/userfiles/files/fivebimabewinufubaj.pdf
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/26gtvtp9obqgq88u13ttg7ea8q/fumuzagekit.pdf
    • https://ontogepszerviz.hu/editor_up/67930982715.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613926364c4be---dudojej.pdf
    • http://phongthuydotho.vn/upload/files/dipamazojatojiniponowa.pdf
    • http://haki.vn/uploads/files/18506004365.pdf
    • https://rajakeempat.com/contents/files/32103582373.pdf
    • https://pernambucoimortal.com/imagens/files/66187923464.pdf
    • http://systemsbiology.at/uploads/assets/file/36307774034.pdf
    • https://cheeselicious.net/UserFiles/file/xoxowamu.pdf
    • http://hotelborgodeipoeti.com/userfiles/files/jijexezajatosufure.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ba.bin
62776e054d625c69bca7a8661d0e7865171143cec1e1de91377612d3ebf393d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BA 11016 bytes

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