Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c45030f4cbcac3d…

MALICIOUS

PDF

89.7 KB Created: 2021-06-26 00:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5daf43109b57a26a36a30592135198cd SHA-1: a6d54b5397b781446d05776c9bd033bb3247973e SHA-256: 2c45030f4cbcac3deef2ec8541b5066e84662de426e3ba685d8dd678ba451094
204 Risk Score

Malware Insights

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

This PDF contains embedded JavaScript and numerous links to external PDFs hosted on compromised WordPress sites, indicative of a link farm designed to distribute malicious content. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into believing they will receive a prize or parcel, a common advance-fee scam. The embedded JavaScript likely facilitates the redirection to these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ef8e3e0d6f760d1522c1d385d213b7a/narap.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0f54f1c05---1518072400.pdf
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/71724965947.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d36d2e61f---sudoxibogotulogujo.pdf
    • https://roweryelectra.eu/app/webroot/uploads/file/16223068793934.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/21f83a1d040a6ba944d2e85fb6f39468/nevotebapazamuwunu.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b96c67cdea---lewejujovavujowuw.pdf
    • http://angelojrobles.com/admin_initial_test/userfiles/file/29995437124.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160954c981140e---92503500584.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f58501388---zewadepexagatejebesavajof.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/0fc92c347d4a6e090beb6ca444550cdc/33340287684.pdf
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/55319523382.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b129570be---38146145374.pdf
    • http://kurier48.pl/files/userfiles/file/25866518530.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/58f8622ad3e3317ff79ebac38f0d49f1/fejotefapusubewijigar.pdf
    • https://bandai-k.com/userfiles/file/mudupumufuvokavawumame.pdf
    • https://arerp.kr/data/file///22245496628.pdf
    • http://omonetach.pl/foto/ilustracje/file/lazuwoberujaniwix.pdf
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c25ec591f5d---loximupekubogosomu.pdf
    • http://whatifitspossible.com/ckfinder/userfiles/files/zebanuwewuzi.pdf
    • http://maroba-zirndorf.de/file/29059946732.pdf
    • https://taevlingar.se/images/pages/file/83309526770.pdf
    • http://tantos.jp/js/upload/files/27160888956.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ae9eef935---jegotagakebilavesotuvizo.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/amvs59e7tur616ua5ktd5ia043/busetedibudafuxeliduz.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=compress+pdf+online+to+1mb
    • 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_off0000fbe4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE4 16792 bytes
font_01_sfnt_off000113f6.bin
90d566215232de5e13a8bda43ffa9ecc2d5a30b4fcdc78e3309e22c0b0f83194
pdf-font-stream PDF embedded font (sfnt) at offset 0x113F6 17300 bytes
font_02_sfnt_off0001410b.bin
b4c94ab19ae3a7d1b2e47efeee43458aba9ea048dce0aece57a037b76695cc92
pdf-font-stream PDF embedded font (sfnt) at offset 0x1410B 10720 bytes