Malicious PDF — malware analysis report

Static analysis result for SHA-256 48950e43cc1021ea…

MALICIOUS

PDF

99.2 KB Created: 2021-07-05 21:22:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 26c12738df81232e76f0666e6912773e SHA-1: 7ccac592665698f06b0d7b1fd1221693b7fc3de6 SHA-256: 48950e43cc1021eaf86848f1958fd16ff6d7a76e9931b634ba83fa208e3f2208
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, many of which point to compromised WordPress sites utilizing form upload plugins. These URLs are likely intended to redirect users to malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/f6ff17863186d5510f535b2557bf088e/72002617667.pdf In PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e7948fdf8---digavopuwufa.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bde1b76fb7---busibaz.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607df0ba38b5c---45055140287.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/831d91f161215ee716ca26309ca13484/11450786536.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/gr2je786sb6cs00t7b123uvbab/45800852714.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c533f002262---pupumalokibi.pdfIn PDF document text
    • https://citronixdeflection.com/nbloom/fckuploads/file/fenenunosexipupakazazopar.pdfIn PDF document text
    • http://www.serenissimaservizi.com//files/3087335672.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/7f357896ff148c4edf22c04aa2a52c82/82637786713.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/6122234470.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1609a88e40404a---12066784515.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/aatpk9ce2o1clhfr7e2aea1d63/firuliv.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8440165b27---medelodifovunenopiluwefa.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acab463bf25---dipivexanapodolu.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/gp9c7vq1kh0fh9cpkl6iqnahhv/61193041726.pdfIn PDF document text
    • https://svingenieria.cl/userfiles/file/deludasitibupobuxabetu.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/71069ec90855aa393cadfecbe74cc192/47043038271.pdfIn PDF document text
    • https://buyafranchise.org/files/files/28999866959.pdfIn PDF document text
    • http://saxonrt.hu/img/userfiles/files/vasezanulamat.pdfIn PDF document text
    • http://wahibluedevils76.com/clients/5/55/55d7338a7abcce318bc847d7f34994f5/File/44176528364.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/93787fbbce768240f04d1dbcd63b13ae/rekupagofukajasulirugis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=it+detaches+man+from+sin+which+contradicts+the+love+of+god+and+purifies+his+heart+of+sinPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA4 16728 bytes
SHA-256: c9d49ba5b036f7df3a66cf78f4fa0a4481f553c42f2fd25305d7f6293f82ec4b
font_01_sfnt_off000149e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149E2 11272 bytes
SHA-256: 473941ac9be012796808615bcc35d346cc0de4e50a63c00a99a424dbaedcdfcd
font_02_sfnt_off000163f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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