Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74dccc0a592c295…

MALICIOUS

PDF

93.7 KB Created: 2021-06-26 02:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c4cae7da5203f813ef7483008c69ce41 SHA-1: b317f869d3e0d56d78d1071264f4c9a3809cd93b SHA-256: e74dccc0a592c2952b480fbc1eab22c5545255420470ac7361c2fc890ae950c7
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress installations, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics strongly suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/odjebtmr4rv7ajpl7fbd394pum/25255327559.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/8u6e3r66epmefar4alpppgffic/rukofuxux.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722cb75538b---rexakefigidipolufuworok.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa61ba2e6b---70467451058.pdf
    • https://kuepancong.com/contents//files/36952685227.pdf
    • https://alarrabnews.com/images/content/content/file/46792770491.pdf
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/3c17b7be225e8a65e95f086e9268b13b/tonopuxakinapuxukuvu.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160764c8e11a01---botapupo.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c3120e1de---pozeweribivatami.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc47fc16f6a---76967166064.pdf
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb89a6d28b---28957575410.pdf
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210611020818.pdf
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/58e8fffdbe672d4c25379bdceeb9e384/tirerono.pdf
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/lpf7jjpi19dqq692uahldrkoah/80465255670.pdf
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/gbhbq0q5le1sp7cbg3qq0l94ik/34080327248.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609685f29030e---wegufaxudukegovavoxowi.pdf
    • http://drivescuolaguida.it/userfiles/files/63034980809.pdf
    • https://majorsagilekvaros.hu/uploads/file/66407971983.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b29a33666---gomegi.pdf
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/7225ada121e9d76935d024ffd944327b/70016752452.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7aa5127f36---pesomemunutinitozofefa.pdf
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/a35cc8c650be5fb9f3d75ea9916fe26b/xofumirogijag.pdf
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/3a5b1c9f79ff797be48233596ba2d8b0/87706268543.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=cardwell+by+the+sea
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ca7.bin
cd4e98cb6c2ed9ce9697151e38a5d2e08e6abbedf095702c7a801ea70607c4d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA7 17192 bytes
font_01_sfnt_off000139d5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139D5 16792 bytes
font_02_sfnt_off000151ec.bin
2ab779fc83624b35e91ae1d0c7158c718aa0a57834b5fe8ac74d13ec7d27ab45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151EC 10400 bytes

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