Malicious PDF — malware analysis report

Static analysis result for SHA-256 574a19e5c16a327a…

MALICIOUS

PDF

100.1 KB Created: 2021-06-30 06:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e0c1e28ece9afab94a6018a2a27b856a SHA-1: ecc770534efeac2447eb73d47a096d0f3a13bcdf SHA-256: 574a19e5c16a327af93a085a2764fee232f061731ddcb648bd64cf6da76da170
156 Risk Score

Malware Insights

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

The PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting. These links likely serve to redirect users to phishing sites or further malicious content, a common tactic for initial compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://cristal-in.fr/userfiles/file/relizunekaxogupaxat.pdf In PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/048ac8c915fe8340326b1b080ee89538/vewuwivofunur.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/sajikerilitilo.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc5c10b204---jigeguwilupunetozawo.pdfIn PDF document text
    • http://k1a.ru/images/files/file/mewuxelamudobunute.pdfIn PDF document text
    • https://123natura.com/stockages/files/feleziroli.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/qg58cjtbqnl68sobj3cr26ab42/kufaxutewavutixojelidisa.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/69079395908.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/5b20682d450b54258d8a7507e47f442d/83327089491.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093a06e7ec3a---64587372674.pdfIn PDF document text
    • https://banghenails.com/upload/file/1757286278.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/fnckfedo7eoddk093menqnuhe7/jikenosuluvesisovakoxura.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071bc75e3cd9---35032840237.pdfIn PDF document text
    • https://economiadecomunion.net/ckfinder/userfiles/files/38066795372.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160959a045af4e---zazipatobexik.pdfIn PDF document text
    • http://builderall.info/userfiles/file/11485287250.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ddcbfcd620---71379450408.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/8b938ed8da51845e60a15ac6f2948760/suviz.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/f3honr55adani4dvq087jklenq/90457881163.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/9524tnr8er2n4974npos8qgan2/55006050419.pdfIn PDF document text
    • https://twfern.org/upload/ckfinder_temp/files/20210529172452.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cecbb86abc5---50242327441.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=fastest+fastball+pitchPDF 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_off00012470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12470 10372 bytes
SHA-256: 734be802f0dc32d2a0c325a62c34a53aa8a8a30ac150d6b3d552d32a33173cc2
font_01_sfnt_off00013bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BBC 18092 bytes
SHA-256: c0798ed854b437fbd8224bbb0d8ce0fa23e19e3ba07d9a51105eb8378b8834f4
font_02_sfnt_off00016b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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