Malicious PDF — malware analysis report

Static analysis result for SHA-256 a938e19da892a985…

MALICIOUS

PDF

97.8 KB Created: 2021-07-14 07:30:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e8113e4fc8c53b08fe1057591415de0e SHA-1: 079ab0be56fd1006404b92ccdd2043f24b4456b5 SHA-256: a938e19da892a9850746a2c28bf90005df71050a9407bab329abff3de3d36f1c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://llsindia.in/FCKeditor/file/37493165661.pdf In PDF document text
    • https://aawyx.com/sites/default/imageuser/file/naxakovisiwebila.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/werimufipubuxijasero.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081c184c1d75---53852120909.pdfIn PDF document text
    • http://mistralizmiryonetim.com/uploads/file/makozi.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/923ab13c9cf22d1a6e789f96c2927de6/46458201511.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/41566488266.pdfIn PDF document text
    • http://citysuji.com/ckfinder/userfiles/files/45905739741.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a09da75d3e5---xabimudugapowenaxuliwa.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/be48d308e7ab917ffe079df41dffbede/liguwopem.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160979f5fc87a4---visejeb.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/watidozokosokikizaloxebab.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf06c985b3---79247336565.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797adb0d57e---73773074405.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/tatuzedavigafod.pdfIn PDF document text
    • http://limobebe.com/userfiles/files/vurukezo.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/18343949023.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3dba7d15d---numiwokapexunupugibod.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/defepajulizudejar.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/61629291136.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e2baa939c---22074592083.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/duvajeferujega.pdfIn PDF document text
    • http://myshopgroup.com/userfiles/files/75432258663.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/sawikafezuxu.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe4b05ca24---5230616053.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=office+of+the+controller+of+the+currencyPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBE 17852 bytes
SHA-256: a10a3a6e961cb2f2f350d619d6db149d6b1d8c4f8543b5e1ab9a5982ecc0f82d
font_01_sfnt_off00014a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A68 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001627f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1627F 10340 bytes
SHA-256: f7b41cd5640fba552dbe3dc0e6476f1989a83926e68c9f9e72d329b84e5e3e42