Malicious PDF — malware analysis report

Static analysis result for SHA-256 d38f5aed5e877cda…

MALICIOUS

PDF

88.2 KB Created: 2021-07-30 07:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 15399ac80b7139fbd4943d3487ac493a SHA-1: 91817da285d026b50ee10f71e1bf401beca20005 SHA-256: d38f5aed5e877cdad755768ed84561e3a89a20e970afd065284fdb230ecf9bd5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised websites, suggesting a link farm or phishing lure. The presence of a visual download button further supports the phishing pretext, aiming to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=candy+crush+soda+mod+apk+unlimited+everything+2019 PDF link annotation
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/tn1nd92j0viala3mo7o2quos8j/72995562197.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/9858c5e8c63a0870ce42ab63318eae0a/zoxivebovawawife.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/1j01akee0voli7ajp4go078gje/25978602781.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/7p7hl4mi65ravgqc2i1cgcvm2s/32922412451.pdfIn PDF document text
    • http://praconsulgroup.ru/pict/file/76971522098.pdfIn PDF document text
    • http://irina-beha.com/ckfinder/userfiles/files/17969734066.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/wixibi.pdfIn PDF document text
    • http://tsrmmessina.it/userfiles/files/30811063078.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/hlji4pinr7m8642ugksui5l5e0/senix.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210618114945.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/de47217909d7bc7f0f48d7439725e510/pupiluduzofavalizujow.pdfIn PDF document text
    • http://voxel-avocats.fr/uploads/file/gopimemorejedopevakix.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/1551bc4748386d5935431614628b7cb4/33322975422.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608084adb705e---30763423893.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/2bo82ud0urv25qdvaahh6u9n06/86308564503.pdfIn PDF document text
    • https://hoangnhataudio.vn/media/files/30306247564.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/81183052199.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1251708bbf---jetefuperapami.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7ccd5c132---12167410005.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f842f1898---muzobuvonixa.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160fa2382a6fa2---lobobutexafajixemuraju.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/oeioatgnsu42tij0vn8vuuufn2/34399421976.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/9ts62kmicmqaat1dv2dtbgk861/voruga.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/38554178801.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/7029391794.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_off0000f1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F7 11828 bytes
SHA-256: 79125a9ee5f01fe57c1c4d61cd595b92d435ed4d920f5ef7d471d0270998d7a6
font_01_sfnt_off00010dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFD 16900 bytes
SHA-256: c0a4b24c2e440fb4cfa052562a1366f063dd8a80492de4ce129d2d2b052d8f6a
font_02_sfnt_off000139c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1