Malicious PDF — malware analysis report

Static analysis result for SHA-256 7611437ba30a56f2…

MALICIOUS

PDF

75.0 KB Created: 2021-07-30 10:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 112933fd1eeff653424ef32b90d3fe28 SHA-1: 12fa77b05d915e418ccf18b97755b215eeab684a SHA-256: 7611437ba30a56f248f5db544863c270a41c9fa4045c6d12cfd8b14481d8007e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous URLs hosted on compromised CMS uploads and disposable domains. These links likely serve as lures for phishing or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://hzdsbg.com/uploadfile/1624649726.pdf In PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/07ff51ec2e0850c3dab93ce0c46a9b93/90508107153.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/h8a24dl3dsaubpm0fqnigb9a84/12482644935.pdfIn PDF document text
    • http://edwardlankin.com/clients/86087/File/18921905537.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/2d2959d1e484dbf243c6bf8ab8b0c9a2/voleto.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/41608185612.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608b29e4da2e1---97634384734.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fcc66a05c---vinutibixomelijaza.pdfIn PDF document text
    • https://cailux.lu/userfiles/files/vopedadoj.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/xumojevanoxoratoxelunabe.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b77d60d15e---20127567146.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/46b2o93k55j7tnmg2c4phfprpd/88837827130.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f85f1381f7b---nidokux.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/26389290494.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/sunebulub.pdfIn PDF document text
    • http://petersonspann.com/clients/3/32/32c4b2f41fa698b5b938e848169c8dcb/File/27046288486.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/64729136724.pdfIn PDF document text
    • http://teplospectr.ru/images/files/xofojexobi.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/124be339eace689bf9ca0e9430fd904a/52004966127.pdfIn PDF document text
    • https://cape-electronics.com/media/file/97506707748.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/xegikade.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/2gc0f8vn90m76qprnjs7gd3knp/64434160198.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/dm8idmfklvidfummo0jsl8n17o/taveweributab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=bazzi+mine+ringtone+mp3+downloadPDF 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_off0000c06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06B 10940 bytes
SHA-256: 628471ab24347254e30990c1c7a5bc0018364488c9f9190e1599ff5f037ca734
font_01_sfnt_off0000d99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99B 17056 bytes
SHA-256: 76e5b52579b8dcf8a0707ec0a00ac5f9995e0ed839b6e916d6723af273762e8e
font_02_sfnt_off00010675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10675 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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