Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49e1de3b5aae85b…

MALICIOUS

PDF

87.8 KB Created: 2021-07-31 06:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 1e4c977475ce8b489d3902802115064c SHA-1: 59bbb0a15ad0c2dd8b6dc33d54352f977b405968 SHA-256: e49e1de3b5aae85b7f6053db3a5ed4ee9a4368ce25a0e58fd609d8b7828e2ded
156 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to lure users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, so the attack pattern is inferred from the URL structure and heuristic findings.

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://vimar.ua/userfiles/files/vozotidejuferajok.pdf In PDF document text
    • http://batiment-tunisie.com/userfiles/file/17026830705.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/0fd5a7cba50c7b10ddea2c074a379873/66066363264.pdfIn PDF document text
    • http://hzjksj.com/images/upload/File/29078407144.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0aa9a14d6---38240357031.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d601bbcb98d---1120234258.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160aba89d45c5e---33939129776.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d85fa8f05f4---83832056043.pdfIn PDF document text
    • http://gdwtechnology.com/fckeditor/file/74639115438.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/892c9v9csra2tatsg4t9sqq2ko/xuvubekonumurunegadosig.pdfIn PDF document text
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/83772288152.pdfIn PDF document text
    • https://aduanaldelvalle.mx/userfiles/file/jolojorevovob.pdfIn PDF document text
    • https://doctmcooper.com/userfiles/files/sezukojuguvisuz.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/e5888631980e6a5594687ddd6470b049/bumuwo.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/88eaf93df6b0e7f6f8b1af464398674b/tejixogosotid.pdfIn PDF document text
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/xidikeripor.pdfIn PDF document text
    • https://cremyco.com/app/webroot/docs/file/56457698137.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/vidifuzidetoxofew.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/kasepukujomukilureravu.pdfIn PDF document text
    • http://teerosy.com/ipp/images/uploads/files/kebaxuzixevilelitu.pdfIn PDF document text
    • http://vivatbacchus.hu/files/file/tokojekaxopalufun.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/nakinekonufovudikigezufiv.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/23735862719.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/gegumirexiwuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+drive+automatic+for+beginnersPDF 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_off0000f379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 16612 bytes
SHA-256: 4620b6d4c58bd89f76eab2d313ebdca6314d817430eef3a1bdb1eb246232d4b1
font_01_sfnt_off00011eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBA 11156 bytes
SHA-256: 46255cc5fad5998cc4f9bb30b58328dc2e6bce9c9d75c8e8c8a2a619898540e6
font_02_sfnt_off000138a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.