Malicious PDF — malware analysis report

Static analysis result for SHA-256 993e4fd580626e39…

MALICIOUS

PDF

111.2 KB Created: 2021-06-07 08:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4fea73e12f4f53defe6aa5a5b3cf0b36 SHA-1: 74dce288d1141d3ba0c145ef3825a4b46f055751 SHA-256: 993e4fd580626e39f4f3dbcb73e6902cc14648a76c9d8bc9a77633e6942cc3f0
196 Risk Score

Malware Insights

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

This PDF document contains multiple links to compromised websites, likely intended to trick the user into downloading a password-protected archive. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' strongly suggests this malicious intent. The presence of external URIs and link farms further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 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://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://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

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