Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69a59e74b92bc38…

MALICIOUS

PDF

92.4 KB Created: 2021-07-30 00:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b446809abdfb4d7a785e80127648c7a7 SHA-1: 28aef2725c58412a34bbe576faefac0149406da6 SHA-256: c69a59e74b92bc3883eea8439e2fecfbcd9d2554dc2c68b3d9c866caf6478250
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The presence of these links indicates an attempt to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://wastran.ru/uplcv?utm_term=tamil+new+movies+download+2021+tamilyogi PDF link annotation
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4883a99c1a---40545244679.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/jipuzowusuvogolosowoda.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/80b8b95de887aef7c01a25596dadbf8e/6425400096.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160938c1b1791d---lixaxinezolajopifimuv.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ac80254a0---zosojowugarumara.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.fr/userfiles/file/72041541132.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae11e1957d9---xebolobakofipose.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/34j6169droas5l41puno8heoh6/51918436147.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021051401474773499.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c20b615962617a8b75886f7fe452f02/zomegavopoxade.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/994c4c01972ca67500cb436e08ae9f9c/14771055552.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/5221469145.pdfIn PDF document text
    • http://eksan-ltd.com/userfiles/file/26312353327.pdfIn PDF document text
    • http://yfatc.com/userfiles/file/38050689724.pdfIn PDF document text
    • http://www.pes.edu.mn/ckfinder/userfiles/files/fuvazelet.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609dcf1d9d0da---55547787178.pdfIn PDF document text
    • https://cecprint.com/images/file/larenorudumaxevog.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609f984c86c4c---womenizedozozuj.pdfIn PDF document text
    • http://119pump.net/d/files/gemefavimuzunigepunajasu.pdfIn PDF document text
    • https://grdr.org/paidel/ckfinder/userfiles/files/falavunifopidibut.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/tevivesegopivapazit.pdfIn PDF document text
    • https://infrastone.com/userfiles/files/71266236243.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/sagagege.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/3c64771e0a2258876b16508abe0077a6/sipanuzukozaxepinivifoz.pdfIn PDF document text
    • 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_off00010323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10323 17904 bytes
SHA-256: 68810f498d547d71e813d70752e278158927f3ca299e92f913600b8369a17f1a
font_01_sfnt_off0001317c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14993 11016 bytes
SHA-256: 3671709aaaceff9e6c06d221780375163b67832bd8b621d1f1f2a38c634895da

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