Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6e0199e9d4ac41…

MALICIOUS

PDF

84.7 KB Created: 2021-09-07 14:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f0886090074f68c0e65124c0d8bf0469 SHA-1: 03cd249323fbda52be68e8a2d129bc873135f67e SHA-256: 0b6e0199e9d4ac41f7c15929a3040b09a97fbeae6478e228384fdb2fafbfed6c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan. It functions as a link farm, containing numerous embedded URLs that point to various websites. Several of these URLs are hosted on compromised CMS upload directories, indicating a potential phishing or malware distribution scheme. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2990

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://elbag.net/wp-content/plugins/super-forms/uploads/php/files/c5a3b4a7200d42cbe756fbb2ec9f27fa/96107277825.pdf In PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/8228421f8c6357c89a2acd88f1f444d5/delisari.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/75075111233.pdfIn PDF document text
    • http://maility.pl_adresuserfiles/file/39891744292.pdfIn PDF document text
    • http://iscyber.com/userfiles/files/wedav.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/0de3817ff718a908f55fec33817fa46b/basefisozanusiwoku.pdfIn PDF document text
    • http://showdoimovel.com/files/files/66502423596.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/06f1b578b1fed78a1ec33ee36d6da887/46066900781.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/82263285853.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b63b92748---36286639739.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/26838774287.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097b520336f7---mefimemojakim.pdfIn PDF document text
    • http://tikatalog.sk/_files/file/negabagopapabakekajoxezan.pdfIn PDF document text
    • https://sanipro.ma/app/webroot/uploaderfiles/sejaxof.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608195a98f725---88482362957.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/nuruvodazubefuzaxupa.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/22457088804.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10932c0cc1---mufug.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/badivozusurorak.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/xubunowetexodedevexari.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/gobanomanafipisimitumixap.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/13843a948e29d865afc1a51a365b78f3/jazezowelerisogefeve.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6ca358428233919841a3800ab26af3a0/98696909216.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160955dee07c43---jasaneluw.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/450046e0d0923153aa7acb775882d27f/sudamozepava.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=character+types+worksheet+1+answer+keyPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DA 18060 bytes
SHA-256: dad5493decc2ca0375458e96c366503ffeae522471adacfb7b1aa66711ecb658
font_01_sfnt_off00012489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12489 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CA0 10708 bytes
SHA-256: 6db19419239580b3429ae806110696e24eb50ea443758e65cfa85dcb98f865b9