Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da4b95d522fe1c6…

MALICIOUS

PDF

82.8 KB Created: 2021-06-25 16:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4ca6431a3c1cc2f76f6119efeef39762 SHA-1: e5781862821c1b1e03dd1d2d0b5a5a2cf2512fce SHA-256: 6da4b95d522fe1c6e5005dc84a890eb27365fe4ac12433942aa29444844d5c1e
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to redirect users to malicious content. The presence of numerous unknown URLs indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16098cea4bda14---96970617497.pdf In PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e569af1b5a---18765413803.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/84509896668.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4f2aaba14---lupewoz.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607744a1c1e35---wurezulef.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/nupototasumojakuvubu.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/64457125601.pdfIn PDF document text
    • https://xn--z4qq44i.tw/upload/actfiles/86540626424.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160944d50ee505---vobozoweduzipowemivi.pdfIn PDF document text
    • http://anhopphat.com/uploads/files/89538265529.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/81818862448.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/d401a6800591ec0aa04ab1189e14a06d/41440121978.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/55217b354d9e386ed9eb841e8d363e14/19883628388.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609242b554489---40984525685.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=stop+unwanted+text+messagesPDF 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_off0000e0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF904 17184 bytes
SHA-256: 8c589cef0de73ace68162d9cd0728f495dd8ee2df2fe267030ed19bcd58bd6a2
font_02_sfnt_off000125e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E7 10860 bytes
SHA-256: 341034b210e571f1a32bfbc9474b0cc482f2e3601da7a80e925b2da01c2bd3c2

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