Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce879dd5305cf053…

MALICIOUS

PDF

106.8 KB Created: 2021-06-07 08:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8b9951e011bbbfbf3b0a6bce52381919 SHA-1: b62a6f6a6af6f66e6e68c02bac1e0db5e2a77da4 SHA-256: ce879dd5305cf0537fdb38fdebdef8940c45d32ca6b5504635c54953df73b2c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious and contains multiple links to compromised websites and disposable hosting, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to mobile device unlocking, indicating a lure to trick users into visiting these malicious sites. No scripts were extracted, but the PDF structure and embedded URIs strongly suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8492

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://drafthe.ru/uplcv?utm_term=oppo+a1k+pattern+unlock+miracle+emmc+tool PDF link annotation
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/0ioalfb721gr5fet4988g9pg1a/7278077575.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5fa010081---43220377129.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1d3362540---24175219449.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/046ea179939afc9b282ef9ad5f9fd407/fogebiratisew.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810804e6688---fudiza.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/2s634fclj9oika0va416iv1op2/donejudimudanerovemiwud.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/tv74e9jgldgmjt7bq3e1clq4t0/risav.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/73762019209.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/49661251435.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb94fc99b3---64577805579.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/6c681d0d7ad3cf96de05065de743fa61/99311965476.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/350590fdfb0c91bbdbeb63fd2a728eea/92089529586.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/nojidodezuxumazo.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607585f4bcfb9---92973556132.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E15 5044 bytes
SHA-256: c9277b1bdf83e4aba097b75d67a8745d5cc22e4adbf8b31a32be42dd34ed4f81
font_01_sfnt_off00015f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F29 6420 bytes
SHA-256: 62ab41f9689713493e7f9eae4b717a6e707b0f0cc35108e711ecba921adf91b7
font_02_sfnt_off00016e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E90 12180 bytes
SHA-256: c551d8263f0dd55beb6ce8fceca272b4ca70ceae1ff82f8b99f70783b1692349
font_03_sfnt_off0001983a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1983A 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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