Malicious PDF — malware analysis report

Static analysis result for SHA-256 60368951f2132ad5…

MALICIOUS

PDF

82.4 KB Created: 2021-09-08 17:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a0d59ddaba84ba921c68aa71d4d37827 SHA-1: aafc9e5cc3d95273fdfa33a0b3cf6a0e2a570051 SHA-256: 60368951f2132ad5e63f07054a8e1b0a90c883e455ce8f44746029641994dfea
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS upload directories. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm on disposable hosting, suggesting an attempt to obscure the true destination. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5766

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 http://bielle-srl.com/userfiles/files/jafezijabusobuzavepapaf.pdf In PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/3453481553.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310d94f00b3---50517914273.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/5c67299daa5d620cf1d7e703966537b9/56395628844.pdfIn PDF document text
    • http://home-hj.com/up_photo/file/tevokejomutajuzabewikod.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/41nh12di1oe92hioooodav5fqg/39215184788.pdfIn PDF document text
    • https://aksusu.com/upload/files/lubazagun.pdfIn PDF document text
    • http://milwaukee.center/userfiles/file/doluxaliwiserujo.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/kegobiridenavozu.pdfIn PDF document text
    • http://zaiger.ru/img/file/81265247606.pdfIn PDF document text
    • http://bulmarconsult.com/files/zafojexegepavusifi.pdfIn PDF document text
    • http://nagymester.com/userfiles/file/88952355628.pdfIn PDF document text
    • https://www.ftha.org/admin/ckfinder/userfiles/files/jewuditejitesodasiruw.pdfIn PDF document text
    • http://33podarka.ru/pictures/files/5469004518.pdfIn PDF document text
    • http://tndgdemo2.com/ckfinder/userfiles/files/55068605021.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/43928703084.pdfIn PDF document text
    • http://www.llmhospital.com/www/js/ckfinder/userfiles/files/97640063103.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613464b140b09---ripabe.pdfIn PDF document text
    • https://dreptultau.hotnews.md/upload/userfiles/files/zilukabozekawasuguguv.pdfIn PDF document text
    • http://niktid.ru/userfiles/file/44984086547.pdfIn PDF document text
    • https://mcsfood.com/images/file/1140942669.pdfIn PDF document text
    • http://avon-bratislava.com/files/files/13126819921.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16135f195865c8---nokave.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f509f5a097---lekanul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=css+stylesheet+example+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E24 10592 bytes
SHA-256: 50d0c9eb0189d7dd2007d33fd6827cfe2db902ca356ecd281886ad1fa36a6753
font_01_sfnt_off00013670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13670 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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