Malicious PDF — malware analysis report

Static analysis result for SHA-256 b24852bde9225328…

MALICIOUS

PDF

88.5 KB Created: 2021-06-30 16:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 95d65c6a170918245418f3800cca06c6 SHA-1: f33af4c62bf7a4c05412e3001e0075d89499acde SHA-256: b24852bde922532831d8b943c23cfe78dd683e9f096a542567793b3f2741ca01
96 Risk Score

Malware Insights

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

The PDF contains a large number of links pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting. The ML classifier strongly indicates maliciousness, and the link farm structure suggests an attempt to distribute malicious content or phish users. No scripts were extracted, but the overall structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://garglob.ru/uplcv?utm_term=the+moon+represents+my+heart+song PDF link annotation
    • http://infinivideo.hu/sites/infinivideo/files/sunizijafiwesi.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d1debb011f7---63446207623.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160c0042a5004e---58641975027.pdfIn PDF document text
    • http://tragiaocolamsapa.com/userfiles/image/file/mifuzidubipuvovupivek.pdfIn PDF document text
    • http://ksnjl.com/userfiles/files/21863517271.pdfIn PDF document text
    • http://446888.top/userfiles/file/36632801857.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/ioh7iesafjhfkmrf87jta2f8ul/38565556439.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/grjkn7u04d4kjo9lsu1npibau8/lalosamomukefoxewap.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/taxoxunirawowimovagenud.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5374bdcef---gefezezabirapepikifoxo.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/e1b9b353b272860c7ca32a119a6087f3/62338190152.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/liwigavuwu.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4vg2fta3ke2ot2d0mcgp2l6bt0/44049973787.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ivhphvts03js66vpcvjbnva2e5/xigapulosiwekune.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7e3bea8d8---sulosunitopodupadazi.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/9013951718.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/2448666249.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/rugev.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/bspohghvt55hi4nkk55k6rvnl2/bojabujuwipubelarafupejan.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef950a1548---boloxoxeb.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/8fd2815869d2bea45db31381ae11a1f1/xizifuzaxiralikevojuniju.pdfIn PDF document text
    • https://cakenflowersonline.com/userfiles/file/vaketexuxoxoturifovemut.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160afcf0712e83---kimixojovoredudinot.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609887f2e9875---64992958030.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/38701097365.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9b2e4cbdf---kezimixukazigesenug.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/85049010811.pdfIn PDF document text
    • http://ylplj.com/ckfinder/userfiles/files/dolidegiwajifelenan.pdfIn PDF document text
    • 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_off0000f7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD2 10636 bytes
SHA-256: 68edf7bd7d355e19e1fe72cff8d58f33e043cc62df405132f966f4af578d13e4
font_02_sfnt_off00012808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12808 17064 bytes
SHA-256: df40eaa0e0b3ec7131b7d96fd75a6c97ce533016f466914007d345199d8d9672