Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0222fa7923bb1e0…

MALICIOUS

PDF

83.6 KB Created: 2021-07-02 22:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 93bb1e9e3f737df1319ac6437ef9059a SHA-1: f8782ac8b86db49c8edf3f8468fa93c3b61c6bb2 SHA-256: e0222fa7923bb1e0b4c40a47150710faa9c9066f0e1d16523511b5cd351b0356
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and exhibits characteristics of a link farm. It contains numerous URLs pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to potentially harmful sites. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 http://crosswaysrecruitment.com/userfiles/file/bufobidos.pdf In PDF document text
    • http://chamdure.com/DATA/files/10435310833.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210614062429727535319.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efb7e6e726---wigorisasofitakodaw.pdfIn PDF document text
    • https://menu2uplus.com/images/file/wimepatineb.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078de0038bc8---50796150393.pdfIn PDF document text
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/93953f6d643c932d23d6b97b9ee10171/votazuritagegofujinuzomar.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c229707dcd0---wunedijonaluvinituloza.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/56157929326.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ef648e7c1---32711584130.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/78733749524.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d62618b17fa---jibodelori.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/163c01377305e5a6ee5cd2a3f7ca9e7f/parolaj.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b133979956---39882901220.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16099164f505ea---27838727253.pdfIn PDF document text
    • http://salon-urody-bellis.pl/images/file/69792535424.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/44140608976.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/zazifilosividiselado.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/001760c92867f9460bd94387de696985/gilagidebozalapegozagu.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607326157b5f4---juxepanubadixame.pdfIn PDF document text
    • http://henri-ruch.ch/doc_pub/file/rovubutin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=the+office+us+locationPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D5 10396 bytes
SHA-256: 108b69ce7849e409ba6a3f06ac1713ad58f33b2ed083c8d7fcd96ddbdb82c987
font_01_sfnt_off0000ff55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF55 16268 bytes
SHA-256: 059a96b6c977b630ec787b9dbda3cf534a93ec7dfb26fcb8bf39ebcecc8f10c6
font_02_sfnt_off0001295c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1295C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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