Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedea9aecaf18387…

MALICIOUS

PDF

80.0 KB Created: 2021-09-06 11:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1734f34f9e74757d1c44949a7208337f SHA-1: 09fa13bd29ce0bb4d17e630a417d645e856f49f5 SHA-256: dedea9aecaf183878632459bfceb122f74db297ea9ee12e321224deed06bbdf2
154 Risk Score

Malware Insights

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

The PDF contains a large number of links pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting. This structure strongly suggests a link farm designed to distribute malicious content or phish users. While no scripts were explicitly extracted, the PDF format and the nature of the links are consistent with exploitation techniques that could lead to client-side execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5559

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 http://noithatsah.com/webroot/img/files/50196398115.pdf In PDF document text
    • http://geologocarmignani.com/userfiles/files/wixaturuwarugaso.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/1665aa2d34997f86be11df5faf61c087/9587506256.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/86939432747.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/94cf264f0b2b5387327eeb3930e56ae1/jifowipilagugorud.pdfIn PDF document text
    • http://www.pranabkumar.com/fckimages/file/xolodasogusodijemujovi.pdfIn PDF document text
    • http://penney1970.com/clients/7/74/747debde904cce1d9d58e62e9103e361/File/75652464056.pdfIn PDF document text
    • http://aotwresort.net/ckfinder/userfiles/files/dovobiwodeloxi.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/74658971e322e10a8e53a925a327a3cc/1488063628.pdfIn PDF document text
    • http://edisonprivateschool.com/cote_dor_import/admin/ckfinder/userfiles/files/3085032238.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/440e80c253145984f3d46ca5a4c0258c/gafamojabiruwagotila.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16278677656592.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/fe602b01a657354526e1bceb66073ec0/jifemewenudojemikofop.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/40cc5424706d8b9fdaef27ade82e2375/kirolufufatafegafuwexavol.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/90621983475.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/162545776538.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/b493a361ddbe76818fd47c1ade16b857/ramizesamogurawixixulas.pdfIn PDF document text
    • http://metalltechnik-kutschi.at/24184759087.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/bakomesutovuno.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f299a5eb02---57776707706.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/zisuwekijikikekazonejema.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202105210442584405.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/sh1tn4mfdl4n4mmm4n9eq77vd7/13990163124.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160abf5d9044be---47029676165.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=constructivismo+y+socioconstructivismo+resumen+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 10884 bytes
SHA-256: 2cf218f776fb44d23efdb960f8266e1c993fce3660b26f48bdb0c10dc003dce5