Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce200d6aa70b508…

MALICIOUS

PDF

72.9 KB Created: 2021-09-01 04:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: cb26bc1632f27464c81e940b7792fca8 SHA-1: c6b007bed6e65d814e091875400f949ba87d1563 SHA-256: 2ce200d6aa70b508f775929ba48f46af0e0da8b4cdeeb7c29a97eb59d22aa939
156 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm pointing to potentially compromised websites, with a high ML score and ClamAV detection confirming malicious intent. The presence of external URIs and link farm indicators suggests an attempt to redirect users to malicious content, likely for phishing or malware delivery. The file's structure and heuristic firings strongly suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://aucoindeshalles.com/menu/file/83014725707.pdf In PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608296eb3e48e---58044119839.pdfIn PDF document text
    • http://ctm.it/userfiles/file/lokugokujijanejuva.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/bevokiwuvugeronavezixef.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/napekagizulixemitobip.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/32164265844.pdfIn PDF document text
    • https://soechi.net/userfiles/file/leniwivokofewigavorofufa.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/dezanevefisibif.pdfIn PDF document text
    • https://leavereview.com/customerinterview/ckfinder/userfiles/files/retuwipo.pdfIn PDF document text
    • http://americanpetrochemicals.com/customers/CMS-IMAGES/file/pasafasexumedodiwe.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/wadubapuruwe.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/44437344252.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/rqq4kfqmjq7feqqgj952mtkqvv/nexoxezakelubifege.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/fagerosexoli.pdfIn PDF document text
    • https://lucky-erotic-massage-bucharest.ro/ckfinder/userfiles/files/15782559485.pdfIn PDF document text
    • http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/76510558591.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dde40cda31---tegewesifowasa.pdfIn PDF document text
    • https://clumba-indoor.ru/files/files/romuwajexisililo.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc04c74296---dafadilefilefuwatajulol.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/1858977638.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/34191420500.pdfIn PDF document text
    • http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wulikid.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4e27146b3---38247379859.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=runrig+only+the+bravePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEA 15796 bytes
SHA-256: 2395c5cf2f9b52c8636a66f233a8ec7150ca6516a4f4eefeec51e4e8be070e7d
font_01_sfnt_off0000e691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE691 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA8 10684 bytes
SHA-256: fc7c99f012b2feb45d0fb5b9934ba494931e285203a329ee322f7e0ad0058fd0

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