Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd34184a59894115…

MALICIOUS

PDF

163.7 KB Created: 2021-07-23 19:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ff71031cc1253d342d23b815c2cac212 SHA-1: 571d1d0f08dcf784cc6c5025891a787741c3bcb7 SHA-256: bd34184a598941151364c7d8479a52f2c2f6df7fa562ca326a7bc71a6282fd71
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://globalmediaminds.com/uploads/files/papaxadexegurokokad.pdf In PDF document text
    • https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/37648632739.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/b8fbkhhd10okg8cl3noptpauim/nukegomirisubibepo.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/53e40e16a86cd37dffee501a662f06a5/69334146819.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090498c44d92---bujovibolazunakejubu.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b639b0d088b---gizaniferigosadejov.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/novopu.pdfIn PDF document text
    • http://djapm.com/userfiles/file/82906817160.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/794103b2869e7c17429ee1acb3c7cbdd/30327312483.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/30980552332.pdfIn PDF document text
    • http://yule-sign.com/upload/editor/file/20210717014558.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/jesevolivak.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/01fb3a56d29219a2b970cd39b1f760a2/36760461941.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609165ddb9990---64399148202.pdfIn PDF document text
    • https://hissekurban.com/resimler/files/meximejulozajuvatudekevaj.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/10670893484.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/71047747809.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a445f135c58---88153151887.pdfIn PDF document text
    • https://eliteplacementagency.com/uploads/files/lobufimof.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/0vqrqdvn8n2c0dg34lu12h6gd4/73036926412.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a98a6082f27---ripobilugugakufukeso.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/ninoxajiwokodapopivufe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=introduction+to+algorithms+a+creative+approachPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20C6A 1284 bytes
SHA-256: 3f2eb68e56e0cc9b24f861ad510cb196f24dbc520975aefba06cb0b93c7ac786
font_01_sfnt_off000213cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x213CB 11080 bytes
SHA-256: 750130795b1b235e02efdca9dc4bfd360f2bfea76a72d74066af6ebd5a7e2671
font_02_sfnt_off00022d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00024551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24551 22844 bytes
SHA-256: 0d07a885c0c1e89b72682bb89640272c92defeb30e35fda2ada5709250b167a6

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