Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e3c464fbc79fe95…

MALICIOUS

PDF

96.2 KB Created: 2021-07-19 00:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 29db0d7a0a8ed33928e100dbd404420a SHA-1: 2d740c8d5740e1655d74c0cae3fa8d50285ee40e SHA-256: 2e3c464fbc79fe9597a6af5a31899312cf1e5df14965f20903be9427ca6508ca
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or initiating malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9884

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://taxicityplus.ru/userfiles/file/65847310104.pdf In PDF document text
    • http://techscreening.com/userfiles/files/kuxewaposoxokagapesus.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c759b75b8ca---80758659541.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085bad3754c6---46644728178.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16091cb8ed8942---74641585621.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/71861280552.pdfIn PDF document text
    • http://topoint.cc/userfiles/fckFile/20210626060615.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/dedumawenigosusasetowe.pdfIn PDF document text
    • http://mictrogiang.com/userfiles/files/muromirope.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/mozelinomurek.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3b960f1ae---jezis.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7209379db5273b45e19b74b7ddd637b3/denudovupegexa.pdfIn PDF document text
    • http://changju-hotel.com/CKEdit/upload/files/nurakudazu.pdfIn PDF document text
    • https://fcksa.com/ckfinder/userfiles/files/49395925689.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/daxexozi.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adcb703e597---66718191399.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16088ef261caa7---4674109681.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/gufudolevabigaritoj.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9701609676---40188421319.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfca8338574---sosawakepubogisigalimup.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e127e8139---32568564310.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/gumeposogitobedofeseruxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=deprived+meaning+in+tamilPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00015009.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15009 19640 bytes
SHA-256: 3814a628be0adafb26c3121189cb32a226170abb524c8dd56d83303203c5354c
font_00_sfnt_off0000d05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05C 10512 bytes
SHA-256: a83180811c6819c360f846fdbaa42363f9c670366e75d1aab24b072054b60270
font_01_sfnt_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 4556 bytes
SHA-256: 104073bd6c522eb86f0686fa06ab6f9b193b833fb18017bd33ce45ecd569b931
font_02_sfnt_off0000f8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000110f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F9 25804 bytes
SHA-256: 63d8eca55a28ec98ce032005521bea77f0ef77ab817c1945ec40045388b66833

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