Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de6450fc3d9a866…

MALICIOUS

PDF

53.2 KB Created: 2021-06-30 21:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e6bec64009c31a402b7d6349c49247e7 SHA-1: 72946ec0ce759e2e55dce6fe9579183d6978e380 SHA-256: 5de6450fc3d9a866a6d79d560b7f5952c1b4e6856d796acd3055c6898a0345fb
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7090

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fwullong.com/upfiles/editor/files/zolonufenevuzotomiz.pdf In PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160708f08326e4---mosotalalexijobigekiw.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/a8ad3c8813b1f6dca3315d84ad028a07/55722954055.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8d137b9bf---89132565136.pdfIn PDF document text
    • http://beiwendq.com//data/attachment/file/tikifatuwojujowako.pdfIn PDF document text
    • http://hasyo.net/files/file/34612249417.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/fosexaxabejerazafejizoj.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210518160658674.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/17cff9877706ec4555777300b53ddbdd/34062150185.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081279a059de---68043941315.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/20241376554.pdfIn PDF document text
    • http://rebizplus.com/userfiles/file/87442198292.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/c6b1ea83c5d23a5f68ebff8a4f19f99b/xuzupun.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/871087cc32c451d391965c240df451bb/10814047937.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/23086662092.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/89500407719.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/jaremedobapuna.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a0733c099---maviwujoza.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ed92b3cc6---17945483618.pdfIn PDF document text
    • http://merrygoldholidays.com/ckfinder/userfiles/files/38247395616.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/42179581701.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607baea1a28ac---84853122527.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5d00ba29163c5e2d866e70cc9d216176/544610784.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/fa21106d680997a513ced465a7bb8f1d/31901853421.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/f6b59c7526965314d312c1718c1969c1/40032735932.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=engineering+graphics+question+and+answerPDF link annotation

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