Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2adc0e25737f66c…

MALICIOUS

PDF

148.4 KB Created: 2021-07-23 21:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 40501be66e2ee9aead46f30d3cf544f0 SHA-1: 0feb1e699a7ce61d6d6e3cd3916c073f6fb2b31c SHA-256: f2adc0e25737f66c3246ca77bba0d26c3300e358d8268af43146a46e17a40f8e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. It also features a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, indicating an attempt to obscure the final malicious destination. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4390

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://hissekurban.com/resimler/files/wesazugoleza.pdf In PDF document text
    • http://toeicspeaking.net/_UploadFile/Images/file/waxozeg.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0777e92314---83602769431.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/72744153971.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/41612997417.pdfIn PDF document text
    • https://migger.dk/userimages/file/89664314565.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/bu3hu8i052ti6ppr4ituu7lunf/kagujanidaxunoxewijimuv.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082b05b95c3a---5597123107.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/79524541042.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e8039b8942---guxolexosapofibaneg.pdfIn PDF document text
    • http://cnpair.com/userfiles/file/58640718441.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/31246983111.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/75540596834.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/begegejugemadazujijo.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/34621550333.pdfIn PDF document text
    • http://daisin1977.com/js/upload/files/xamokutoxakikamusexal.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/857d15e2f587351e883fa717f1bc00b6/97273639420.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608534f483b19---dobuvototadojugibeji.pdfIn PDF document text
    • http://princeverma.in/uploads/files/mevutepeju.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/pubanimamuvenupev.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/v7gdmhqkg1g0eokno19n0qbodf/31282260168.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/nowonurizimimitinubafiwe.pdfIn PDF document text
    • https://lanna-flyingclub.com/ckfinder/userfiles/files/40425161843.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=best+bots+in+transformers+earth+warsPDF link annotation
    • 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_off0001f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F8ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000210ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x210FF 17680 bytes
SHA-256: b9cb426e54113ed7c147379a19f7d06bf07a87a33f794a5cda947d9c43ac2645

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