Malicious PDF — malware analysis report

Static analysis result for SHA-256 b890dd6b89275e5a…

MALICIOUS

PDF

84.1 KB Created: 2021-07-02 02:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 714bbca9776794429902ccd3294a7777 SHA-1: 84d2fbd5728c88a9b763d00c7cf79463d9c54d74 SHA-256: b890dd6b89275e5a111afcf8b0280bcfc0c24cbb68713a936fea589d4b10fb89
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, using lures related to lotteries, prizes, and parcel delivery. It contains embedded JavaScript, which is often used to redirect users to malicious websites or download further payloads. The presence of numerous external links, some pointing to compromised CMS upload storage, further supports its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://juvelyrikoscentras.lt/Files/file/34113147920.pdf
    • https://proektasis.gr/admin/spaw2/uploads/files/bipusomamob.pdf
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/js68ddfa0gvjgmmp85atgoia6l/269076775.pdf
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071d38998f7d---xotonetunidajaferaxov.pdf
    • http://lnyuanzong.com/uploads/files/20210625092648.pdf
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ab521169b37---85059549579.pdf
    • http://gold-carsales.com/js/upload/files/lulewolexajosedupok.pdf
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/dmu9t807t94acdkjps76g8qt26/deruwekozududatide.pdf
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c0bf3d229---begax.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a93530391b---vozabizuxitigol.pdf
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/1322a611d19e62be8c2a528e47fb5a38/65097835174.pdf
    • http://katyababash.com/images/uploads/file/15669912508.pdf
    • http://plafondchauffant.fr//img/user/file/92903496307.pdf
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16081a319590ac---pipakivubifopazur.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/181d42fbf6b45f944de636bdc40554fd/xoferon.pdf
    • http://lukoilmarine.com/ckfinder/userfiles/files/lokipozo.pdf
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/f5bde73e4634cb50c82bb42a2e66c2dc/83113983922.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf24130d983.pdf
    • http://ruihuitax.com/files/file/67622693699.pdf
    • https://legouic-peinture.fr/userfiles/file/67754637484.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091241b64a80---63042635573.pdf
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606eee5b599a3---vigulifu.pdf
    • https://hometeamcorp.com/images/usr/17483597080.pdf
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/8vivopq80ovfduu1v8pj3q76hn/573654208.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=convert+pdf+file+to+excel+free+online
    • 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_off0000e7c6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 16792 bytes
font_01_sfnt_off0000ffd8.bin
9d530748b87691be4e222fef870b39e02ece795ac5995c3489f0c85a47ceece7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD8 16672 bytes
font_02_sfnt_off00012b4c.bin
c118f3ae10710d653782f17d4a49bd445dc5da4ad4efd18cbcdb75a1c3809192
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B4C 10484 bytes