Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ee5d4e71410c08…

MALICIOUS

PDF

114.8 KB Created: 2021-07-05 02:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 29ddea292f69e7c1339f83d24f961a1e SHA-1: 6ceb3141cb0d010cd5b46c885c9d1c6d4605e932 SHA-256: 27ee5d4e71410c0857e9f25d3b1f7dee73b2790d7f6b32aa72f9ef41be12b9b9
196 Risk Score

Malware Insights

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

The sample was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links to potentially compromised websites, suggesting it is part of a link farm designed to distribute malicious content. The document's structure and heuristic firings strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://studiotecniconuti.it/userfiles/files/34640457347.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ecf7e8274f78c1e3f4151b4ce2667884/fipazutegapafabube.pdf
    • http://thamdinhgiadaiquang.com/img/files/gofikeduvokenefolizir.pdf
    • http://hakkabrothers.com/userfiles/file///ladugifatitukivul.pdf
    • http://tenfci.org/userfiles/file/2676354939.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3940743c85---72639154912.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16070be3ce9164---linurosoxijajogigujarel.pdf
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1607db70dc9226---30195240090.pdf
    • http://kondicionery-lubertsy.ru/upload_picture/file/71892043007.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b896b94969---refesisojogejaperapaken.pdf
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607563cad3cc1---23059323515.pdf
    • http://mingzhicc.com/userfiles/files/vositebuzodonipuw.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b15a234a607---situsunofatuzuj.pdf
    • http://tutaylamhet.com/storage/ckfinder/files/12182313997.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd30391cd1---79146366390.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160dccd360dc69---vufezagilorukusiv.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a39dc235c1---11610555410.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160a28a1fb2d1f---xedoxazesibonefinibu.pdf
    • https://netiko.ge/img/Data/file/zubokufuwa.pdf
    • http://domplus.su/userfiles/files/zajijizagovuviputo.pdf
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/26fd9fd100cf34ce88754c2d16c3d85f/kaneladujuve.pdf
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/d1251a8fdbd3658744e08d66d7d2744a/pikoruvariwil.pdf
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d13e9cffa---dunokalewobut.pdf
    • https://bloomlight.pl/_bloom/file/nuligaru.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=driving+the+road+to+hana
    • 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_off00015e65.bin
9e9ae8ee1c0968a2bc593fced4a08a47914a7aebd32f4c509b459d2d9d076329		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E65 17876 bytes
font_01_sfnt_off00018d84.bin
098e28a5927df42fcc025b330cc71f33a54aa7110b0fed99002608dcf48ef990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18D84 10380 bytes
font_02_sfnt_off0001a4bb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4BB 16792 bytes

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