Malicious PDF — malware analysis report

Static analysis result for SHA-256 1704b0fbead64864…

MALICIOUS

PDF

89.6 KB Created: 2021-06-24 07:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0141a98b1c68455ec006b5e4d8c7e547 SHA-1: b6fbc695e4ad8b2bdd8071d82d40f7a722720f9f SHA-256: 1704b0fbead6486496b4769d05f9f1d4cdf1fd16cadab68b2cd74537e9ae8bb2
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains metadata related to 'Glencore ipo prospectus pdf' and 'wkhtmltopdf', indicating a potential lure to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://huntic.ru/uplcv?utm_term=glencore+ipo+prospectus+pdf
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/758dd7298ba6a112f5b0400808fcd45d/peziniwonutobisoz.pdf
    • https://landbondcorten.com/attachment/file/30cf7770614e547b1d6f8ee7b074d0ac.pdf
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a68e8f3946a---lojasudijizumuxukekibi.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16094687183506---92245583213.pdf
    • https://bcbc3399.com/upload/files/12984081677.pdf
    • http://studiogiamberardino.it/userfiles/files/pewobiporodeliwigob.pdf
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/j01cnp7vvttnpng4grlfva309f/dinapinobagifodu.pdf
    • http://bukharajohnscreek.com/sites/default/files/file/zifuxulus.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c306f9038f8---savekuwozimelagoture.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac078da9a85---finivuberuz.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/rr4fb5s613j0dv97qrsoclt9s3/73574231772.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1dc241372a---46875053521.pdf
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16085d7a87eca4---rigedalovutuvobef.pdf
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b276b1da914---rilekojisajimelogafimenu.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/3b07b48511e9296ac8ac432cc53edfd9/moverojoraminidirere.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a490403aea5---83768141687.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b5aa5a67c93---midab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e9d.bin
2be9b7000cfbd8f7c72e9b294a8f97f94885b10421785da20fd3bba2b4873a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9D 4968 bytes
font_01_sfnt_off00012f9e.bin
6f092cec268f5c7ba1e4c76a9900c309aae70a1aeb8efa0a18cd9061498fdeee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F9E 11976 bytes

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