Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ef3f94f5a901e4…

MALICIOUS

PDF

86.1 KB Created: 2021-07-01 13:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d14d7fc21af347c783742aa6c3d39efb SHA-1: 252d904e0ed660e2126d69ea9efa9ca0497a1773 SHA-256: e7ef3f94f5a901e46ee4b785510db9fe802c409a1ab5bbeb2b7d60995c73c2a4
96 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised WordPress upload directories and disposable hosting, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and the structure suggests it's designed to lead users to potentially harmful content or further exploits. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://prunay-en-yvelines.fr/ckfinder/userfiles/files/midejedujoravozugixuva.pdf In PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d3320cea1e---muzuvapixetugejobagapex.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/l2tmk2vreko93mqttf8q7800f0/vekirivudif.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16089f0e3c73f3---wejipojerezubewalekeda.pdfIn PDF document text
    • https://fotokeramika.bg/userfiles/file/24098289006.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ba045f540---5736422009.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16077111a40ec8---84217479661.pdfIn PDF document text
    • https://bdcomunicazione.it/file/puxikaxodipubafudovixe.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9dda2ac93---83985508404.pdfIn PDF document text
    • http://crystal-lamp.ru/uploads/files/povibirejep.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/5055502603.pdfIn PDF document text
    • https://carlojans.com/cms/file/4024782306.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160792072299b0---nofugekuxeruwi.pdfIn PDF document text
    • http://chinhlytailieuluutru.com/media/ftp/file/dotawididosutagirejez.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0f8e8ab7e8---87662565640.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607286f5d6329---22778716472.pdfIn PDF document text
    • http://9meclinic.com/ckfinder/userfiles/files/xulabalawoxojuko.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/ctcupmj6b03269jdv52kaekek3/patuzeretoranu.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/f0b54c0703794e3f855204e63b1067fc/41443145501.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/topomurofasi.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3eb358467---nakaxugamuz.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b020411ce---72516455963.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/70a8fc6f50d00e9a919aec9454c25994/jukuzolojewuvilaluxa.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e015ee495---92648627385.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=do+things+you+love+quotesPDF 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_off0000ef95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF95 17060 bytes
SHA-256: a4dbc0177aae661f6d7d7fcad5e61e84f5740a056fc2684d1aaada04a1aaf0a6
font_01_sfnt_off00011b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13362 10552 bytes
SHA-256: d9e102abe3a655e2c6ab7c99bff909ca8f75494fba14c1e4a71cfd931f34516b