Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43ed14332712c38…

MALICIOUS

PDF

99.7 KB Created: 2021-06-25 23:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b36948c60676acc9e7af85bcd701a976 SHA-1: 96b7c6f84f815d2c9a88f3cccfc3fefe5dac2ce6 SHA-256: f43ed14332712c38207675c48e8046b0d46b8c5f090c516a3532ecafb10c4711
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress upload directories and other disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links indicates an attempt to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/45ac5689af53aae9a4d25095bf255eab/40294472507.pdf In PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/702f5e4624ea288e542b8c8d832e78c5/nitatene.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/b257475d474757be7b441aea52e6e72f/29460127654.pdfIn PDF document text
    • https://signika.pl/Upload/file/28009105956.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eed04bfafc---64525586490.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/vereg.pdfIn PDF document text
    • https://portugaliaimagyarok.com/ckfinder/userfiles/files/livuxezedabutefosivawa.pdfIn PDF document text
    • http://varanini.pl/userfiles/file/wirutebujow.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/pixexerogefejepesobosil.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ecda4b128b---xikibevakixadezo.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/aa447c1bbc4b81f96403938f83e0dad0/xefixozulatigo.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/uskko8lfkibc5d6cbakgongcui/gananubunaxowilogabogodi.pdfIn PDF document text
    • https://tkquiz.com/userfiles/file/5448193193.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/8021982096.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cdd8ea5b1---46830093612.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/83e76e42f6e11ab3dc6d28520faa5ceb/pikefubifigimajetil.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3e9b5dc51---62216516467.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bc11c0d254c---mefixenonisimuwapope.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/91c3fb4b93b1f82081272a07129eaa36/newejatekifukifopaj.pdfIn PDF document text
    • https://businesslife.com/content/file/papujum.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b29fca654---50693663098.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ecbdac153848739428a7f1ca0285bdc4/18380975936.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/14e731d1d2c6d473ecb22c7212d3d00f/ritijavegikofumetap.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/a927705f4c93fbcb1e1db8a2b55d1a27/26621610866.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/da1faaf2104b30b116f7920f5ce35701/wusakefufokojazu.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926d820fd9b---fizetotasigetubetefexot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=difference+between+user+story+and+acceptance+criteriaPDF 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_off0001213b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1213B 11008 bytes
SHA-256: 5b9b9e6c9401d3984c5fbe7fee9891d28499f3b7e56c49cd2bf60c95a511868f
font_01_sfnt_off00013adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ADC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000152ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152EE 17604 bytes
SHA-256: 035fb59cbf4819a0de1c77a7929ef51d6297fd7d0ce88dc10ca849878ecb5771