Malicious PDF — malware analysis report

Static analysis result for SHA-256 377046906eb00018…

MALICIOUS

PDF

109.6 KB Created: 2021-07-14 03:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d8b568cd7d8ca1fe7eb3c94d37c71523 SHA-1: 5ac01baec8bc8c8f12bb53f98b6f871a0e97bb90 SHA-256: 377046906eb00018671c70afd46c92fd172486054cc158e20f04023fea12cf31
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple distinct hosts, many of which are compromised WordPress upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests it's designed to lure users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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 http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720506ca858---67841386461.pdf In PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/tbu7c5v6a401nld3q8frlmgg0p/88187527917.pdfIn PDF document text
    • https://mfdesign.hu/files/file/10601503968.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/beb205a142d8b12473a3bdafc830af3d/ridawofixuwila.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/f0853f0c3bba82ca966d4f0dc1627fc4/96504069468.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/81029496474.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/db7f183d6551925baac5dd19c761735b/59066575679.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aecb45cd952---pujazaxabikeberumudab.pdfIn PDF document text
    • http://v-lukomorie.com/uploader/files/35183030816.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093b31b75b2d---dupisozepapomu.pdfIn PDF document text
    • http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/30036850696.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/v3e6o96tg6fc5705nl413eb92r/fuwimu.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160921ce8d0216---39113722946.pdfIn PDF document text
    • http://cgl.lu/userfiles/files/memewunuxugoxe.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/97804033676.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160717b55b3896---wixerokupegilokibisa.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/260b5acbd2b5c082c5cba78bb675660c/71134911798.pdfIn PDF document text
    • http://bettynblue.com/upload/fck_img/20210607/file/nekalibuvikuwobu.pdfIn PDF document text
    • http://rockpapersun.com/upload_mce_image/file/kupasukunajunuv.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/hnqlbaqo279j88anrd0a74a4jl/xipejikenazitanipawukepit.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c990c825d67---37194040916.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=we+need+to+hang+out+billy+bakerPDF 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

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_off00014bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BD7 10800 bytes
SHA-256: 0b5656b67379b7dc601723a54a2f34c4cb016262d8a82ebcbbe698d5819bdb15
font_01_sfnt_off0001646f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1646F 17348 bytes
SHA-256: 111e5c1875bbd5f1b7e367627d0fa082bea71de73d590cb48e027d656b4dd1ef
font_02_sfnt_off00019140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19140 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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