Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba1945ec9002a1e…

MALICIOUS

PDF

69.2 KB Created: 2021-09-04 05:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a669fd876d80149ee7cfcc3c0f506352 SHA-1: 186e07dde0239c005664b56d7f22a0bec9a01fc8 SHA-256: 5ba1945ec9002a1e43ef54222ac46c4046a25247510cf11fbff32b7a599b2a8e
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely serve as a distribution mechanism for phishing or malware, leveraging the compromised sites to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7780

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 https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/256d5df3d5cbdad22997302d153e8b23/lizuberosexipafu.pdf In PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/43394487393.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/polajujuvibibo.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/dovpai1if6s51sjt4ctlvc79u4/nedudedu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086bfc556c27---71138258808.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/86714805617.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161067c24a6d27---39859104653.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/dafidojujufiruxi.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2612e49ab---pobezezifewodon.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608e463529009---30370049198.pdfIn PDF document text
    • http://maihome.hu/admin1/file/jususewavizumuvej.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160737bbdd76dd---reradigexuba.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160955004ce719---31164243950.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/797dd3400662361700b68974362bda7e/87478531472.pdfIn PDF document text
    • http://apartmany.cucoriedka.sk/data/files/daxopejamisupo.pdfIn PDF document text
    • https://trinityautorepairs.com/uploads/files/28258281852.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/6204a6b1df8deeac1fee3f808428a2b0/selewawuw.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/3397083073.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/q1q5s781ki1srh9nptu3q23up9/26229635303.pdfIn PDF document text
    • http://escqatar.com/uploads/userfiles/file/file/gazanivexekol.pdfIn PDF document text
    • http://dongphat.net/upload/files/juduketonivi.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/0d7dce28c38d1c82ae39db9784e028c7/93184193888.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=daffodils+poem+by+william+wordsworth+summary+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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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