Malicious PDF — malware analysis report

Static analysis result for SHA-256 565a58d5fb2c2016…

MALICIOUS

PDF

88.8 KB Created: 2021-06-30 23:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 389e8281e5b080f997e64ba0c925d4f3 SHA-1: e5fe67c5056b2ccbd30ea8a6839f49ce59eb5f2f SHA-256: 565a58d5fb2c2016295fd7b8c5af991f92eb273458becb79d493ad9b47005cc9
156 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. It contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating it functions as a link farm. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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 http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f8a068bda---19998043581.pdf
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbd05e0bda---80455949427.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160d4927ced9d1---gogejuxipum.pdf
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b26fad7c0---56523068743.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/c6c3473d230a92c4aae955e527b84881/gusoga.pdf
    • http://cesmclassof68cheyennewy.com/clients/82478/File/ferevota.pdf
    • http://rebornfair.com/FileData/ckfinder/files/20210618_40186C763BE9C8B0.pdf
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/79673f62025cbc4d616920ab02d6d002/zeluzesun.pdf
    • https://whatproperty.ng/ckfinder/userfiles/files/76416448898.pdf
    • http://airelimpio.mx/img/editor/file/talofelisimepaxe.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dcbda044cf7---lupakizaxibobesizusug.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ad900b6ee---begibutibimibotisuf.pdf
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160777182341c7---vulapepowowukap.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e3c64d68f---larokaxinetalufetobone.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/nits21sd9tioskv0qpr86j0tf4/fejovotuzenuze.pdf
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16094589241c34---65062896880.pdf
    • https://bamfieldrental.com/userfiles/file/92899471671.pdf
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a92696b499---3886452206.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/1bd4368540fd0a57d896a2bc10f4414f/wefigubepavoze.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080d07b7376f---gumatavekuminokivebasux.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2b5da9ec3---18399443132.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0327e9700f---5035228417.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/j6fcgulaq4cg1p5q8lettgc124/ratotixu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=dragon+ball+super+broly+2018+download
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d166.bin
fcf48493bcb00459ad1bac63257a399dc10dc1a31dbf9210a9d5b36feff70651		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD166 11320 bytes
font_01_sfnt_off0000ebd9.bin
8bfc5e2f6383778b4716e60c732a7e5228106b692ca52c1f6b3c0b2892049825		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD9 16060 bytes
font_02_sfnt_off000100e8.bin
7188e8c57b127656107ab6d05b3ae58d531968556bae29314cf07e47aa4df303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100E8 17532 bytes
font_03_sfnt_off00012e4d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E4D 16792 bytes
font_04_sfnt_off0001465a.bin
29538658f600c3bf361bd0c09fc2aba9a173e27deeeb2e191d8703c1a03c2fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1465A 3068 bytes

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