Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d093f1d07e056de…

MALICIOUS

PDF

111.2 KB Created: 2021-07-07 21:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d01f7ae9a724e37bdac2d6477fabcf01 SHA-1: 4e81e0356df0d5c802727bcf2f79c8991449e3f8 SHA-256: 9d093f1d07e056de29ed198c335fb4e89411754ab3cdd69532dcb656d4709881
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a malicious phishing attempt, likely an advance-fee scam. It contains numerous links to external sites, many hosted on compromised WordPress installations or disposable domains, suggesting an attempt to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with the 'Advance-fee scam lure' heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9330

Heuristics 7

  • 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.
  • 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://irlanc.ru/uplcv?utm_term=blue+moon+mango+wheat+nutrition+facts
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c466d996546---56734235888.pdf
    • http://dichvuketoansg.com/luutru/files/vizepobagowi.pdf
    • https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/besoranujanom.pdf
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/lilagesiz.pdf
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/chgnqdos2rji51sh7iqjhaidkn/94073209718.pdf
    • http://adance0112.com/upfile/editor/file/ridoluwalubopukoraroxe.pdf
    • http://csim.jp/ckeditor/uploads/files/dudumibusafepamojetego.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/a8742579fe5d177fe9210b335e68e820/vitedaxilefizetifenig.pdf
    • http://fecoil.com/userfiles/file/19379614568.pdf
    • https://eatorhours.org/e-bussiness/fckimages/file/19650077173.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/r1tvgtnb135rg31a3q80bftni2/disaxuvikul.pdf
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/67pjhkmvtlj2bcs2bfdv7o37ev/pakiguxoruwakerid.pdf
    • http://stark-tools.ru/images/uploaded/kevivupugije.pdf
    • https://renebeumer.nl/userfiles/file/51046316759.pdf
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/7cb85e0ebf496012fb91fcb7fd343950/85910766688.pdf
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/913304abc3ddebd6c84a9d94bd94ad07/fuvedi.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/j700ft5h9rq3n0iqanvg2lil5q/lekuvesexiwurekebibike.pdf
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/301089b44a66652e128e52f477add81c/vurada.pdf
    • http://muszempilla.com/files/file/jofufinokasepesojegowo.pdf
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d4340c5d4b3---11986635848.pdf
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/d5008f2a20a2a53f16370b0ff9e05abd/60104399990.pdf
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/16851367030.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609412649ad1e---37338558687.pdf
    • http://accessiblevehicleservices.com/userfiles/file/79980804346.pdf
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/9jcc47p6kq7ke9mg6mueghhpf0/16353364734.pdf
    • https://tenekedjieva.com/uploads/file/pisol.pdf
    • 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_off00011306.bin
7bb1d59fc74b1f97ad849f256d8b1189f45a4df7b2c49ec1e3d4f06e0063e169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11306 11020 bytes
font_01_sfnt_off00012c8c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C8C 16792 bytes
font_02_sfnt_off0001449d.bin
e0c71742977bacfdb4d907327ca01c1c949540307da6d8cc2ed6934ce07de041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1449D 17488 bytes
font_03_sfnt_off00015f70.bin
e60ac64f076c03ccc55bc42a9079a9d0ac7c18754d4d43621eb2df6cd764e444		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F70 3740 bytes
font_04_sfnt_off00016d5a.bin
7e202585d3f5cd8f0998b482b464b51d993e3e5616638c9f5cf1e8a6f9b2baef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D5A 24416 bytes

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