Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9be64c04619bb3…

MALICIOUS

PDF

64.3 KB Created: 2021-06-10 02:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 03642c5f31ce964592816cc02c4d16d2 SHA-1: 10374951f141711d0bb74bdbb0e9795b7b5ddfa5 SHA-256: 3d9be64c04619bb39f81b602e10b8e42b96405a5b6746c1f2691ddde85459364
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document employs a social-engineering tactic by presenting a lure to install a browser extension or update, a common method for delivering malware or stealing credentials. The document contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a distribution network for malicious content. ClamAV detection and ML classification confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8681

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://garglob.ru/uplcv?utm_term=s7+edge+android+9+update PDF link annotation
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/86d332935b485d18e6bb320dbc3cf2a1/susonamilitobuxajipitobul.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/5122670069.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160905e1d4816a---75371236049.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/idoitr2ces28r7o49e3rso1eju/53205286640.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/49672189357.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/16efa9c52f25f303d18a05d8268a6e69/30115982811.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/golasu.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607444fb714ac---tededowujupitekokavike.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/f51de39898ae6ff892badb031df1566c/24326842212.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/8c4445b8520e7432f9519471d722deec/42044121274.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8382f6689923668597fd3681fb82ac91/91716826660.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0a55c233a---bamawakitegapoduzanigaviz.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/59799843265.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/mvhe4fjn3l7hrddnlhqvbcljv1/talexovigadatesum.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b12c2db25---jewikunuzapaxejuwu.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/0df7933b461dd888ecbb824face197cf/zigojuravobop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE473 5256 bytes
SHA-256: 0a8aed32028e60d26a00cc94af472861d2d7c81b5339681754a86ad7fcf3f1e7

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