Malicious PDF — malware analysis report

Static analysis result for SHA-256 7309f93d12f109c7…

MALICIOUS

PDF

80.0 KB Created: 2021-08-12 13:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: ea01459b950a29a3635f3567d1ad89ad SHA-1: 8013288c23a7bb519a1be67cbc5890adcb92edf5 SHA-256: 7309f93d12f109c7ded923af5991967e48a4ff9c8f980e3fbf9ce3aed378c9e5
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8700

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://catamma.ru/uplcv?utm_term=how+do+you+describe+appearance+examples PDF link annotation
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/e161b0760660e410c825ff0cbf72dbf9/fevepefewirokavatijiv.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/0071fc7f983f4e0bc88dad5ebbb3b130/katemegaluv.pdfIn PDF document text
    • https://suksesunited.com/contents//files/24297513703.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/b04de3716bfe0461137157ecadfceabd/ladifafodovisozemo.pdfIn PDF document text
    • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/1172eb1bcd2b8125c26387d3cf483b52/tufurubasafezijukum.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab107205ddb---90352726853.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/gagukabutofu1621120593.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/4b331b2074ba39f5570a8fba5a510ddb/zenedotivulikurezavin.pdfIn PDF document text
    • https://mimpiindah88.com/contents//files/fijinaxawabarewiwepuf.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607f720beaff9---16035608674.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/dufoxoxonuragowuvusi.pdfIn PDF document text
    • https://12shio2.com/contents//files/dadegonexame.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/1gqqhngpp6cfp7fef3b7899lg3/58437120371.pdfIn PDF document text
    • https://uleiuri.ro/userfiles/file/69384193118.pdfIn PDF document text
    • https://spacio.hk/attachment/file/fafojozuxad.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/400058bbf0958199d0ccebeaf48c4c1e/96636984398.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/6a7655da9a70c938f004af9eec0a5472/86708646449.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4014197b62---74402256888.pdfIn PDF document text
    • http://asbu.net/uploads/FCK_files/file/73280546196.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/k3lj71aa5l2efuurrlm0ubnegi/83550840209.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/79215028707.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c38fbeb1834---24631278516.pdfIn PDF document text
    • 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_off0000ea4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 16572 bytes
SHA-256: 8689b2cfd87ee5e55fdf1ea34e1731fc24679c30e2a584fd0d91f0b05af5a58f
font_01_sfnt_off00011560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11560 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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