Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f47f8d4726d6c25…

MALICIOUS

PDF

79.4 KB Created: 2021-06-09 13:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1f1c09845c54e34d04e0bb6957817b84 SHA-1: 0229524d8c58fff77d15bc6480ddf3c4d3e90620 SHA-256: 5f47f8d4726d6c25e4abc65938c82699349e655380452d802891e74f573a3caa
164 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites, many of which host further PDF files, suggesting a link farm designed to obscure the ultimate destination. The presence of 'utm_term=geometry+dash+world+apk+hack' in one URL indicates a lure for users seeking game cheats. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://catamma.ru/uplcv?utm_term=geometry+dash+world+apk+hack PDF link annotation
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/efbf98edae8e147147c8689e56a245b7/mamojiwuledobevaze.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec3629ccf---58061637060.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/zovufiwisenawifabirud.pdfIn PDF document text
    • http://monkey-do.net/userfiles/file/36162527747.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1608956938ac77---tukigevom.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/283307e58e17ed14727a0cd8bf84b81f/89207006409.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b84207e56ab---tagivijakowubusemajuda.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/83074491341.pdfIn PDF document text
    • https://mt-creativestudio.com/ckfinder/userfiles/files/14197196411.pdfIn PDF document text
    • https://sealskinz.ru/files/file/72921042490.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/49588517889.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/6292d841d13eb8505f2cab704d0b4c71/davasofavat.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160981bb2b678a---radapokakisi.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/neomrc10rp5l2gnkn1hroe005q/368893575.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a475a7ddf4ae2dee8538f561ebe3035e/bikuvexikogelugupat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE093 5604 bytes
SHA-256: e16d010616fc8a7f8f9e9150c8b153969b83f56201d75f68ca61e90a5c5cd611
font_01_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 11564 bytes
SHA-256: 8bd7ebb9b53353addafa6674073fa3c40c078871bb6d7ebc280709b3e51f3c2f
font_02_sfnt_off00011a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0A 16104 bytes
SHA-256: 9f858655571ea719834e7f05387c4c83781056d704dc0a8044185ef8d130ca3f

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