Malicious PDF — malware analysis report

Static analysis result for SHA-256 1469d94f12bd8706…

MALICIOUS

PDF

89.4 KB Created: 2021-06-27 21:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 21ebcd5bcc519bb82ac89cc6521dac8e SHA-1: f6abcf17805c98d028e7680f2a76fdf9d84f6dd0 SHA-256: 1469d94f12bd8706b64f374d2a3d5a3063ec4a475e62306181e3a14cfc6319f6
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, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to compromised websites or disposable domains. The primary purpose appears to be directing users to potentially harmful content, such as phishing sites or malware downloads, disguised within seemingly legitimate document structures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

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://arlingtonhigh1961.com/clients/e/ef/ef36f0800c0a5d5a0b00d5ecc8c3c6da/File/nekinaturabuxegisos.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160830113407c4---72512242090.pdf
    • http://envisystem.com/upload/userfile/files/40618922168.pdf
    • https://srmhomes.com/images/bulk_images/files/ditaxevezikupamupanut.pdf
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/24b665fa253d1d88a5bf8530bb22573e/nofelofoloxokutodadejamov.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097dcdecbdc7---gowopobizezejifavubu.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/5ca3d333631fdb7e62381c25aefe4e88/sulibakawab.pdf
    • http://kondicionery-vidnoe.ru/upload_picture/file/baraxujosif.pdf
    • http://brooklynsmokeshops.com/admin/images/file/mimiradig.pdf
    • http://accessprecision.com/userfiles/file/junedosujobixemafe.pdf
    • http://tunglamgarden.com/images/fck/file/87398732286.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a24d52c54---66469868126.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/45mklgi2pouioiqab62l003567/reweruduvewewikuteke.pdf
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1607fe9a42---xuzudakamav.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbe64a779d---wiwudosigawewig.pdf
    • https://haltia.mx/sii/ckfinder/userfiles/files/39222606601.pdf
    • http://elementsgogreen.com/userfiles/file/genizonobirinimejutejulo.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16088e4ff57694---jedadomutizinafavan.pdf
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/083cc15506d7f6ae2456f01edeb35976/giwufig.pdf
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/7c60b51fcd1b39763ed4c01b8eeb1bee/79965324456.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/a515101b5b7a29124b68799fdce54b90/getimetoduritolib.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/i1keh50d0mj7gi0k1oudcl6ou2/jerulaxabetulerexel.pdf
    • http://maychamsocda.vn/images/userfiles/file/misovovemeriteridalin.pdf
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/d0ce3b7b8cf79b1ea8739287e5b87828/6674491206.pdf
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/0ngqrk86bdfjt625rn8ien2hrg/82008563105.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2610811a8---beriberisazarisi.pdf
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/t4n505ecphmfl7a5a5eg7rbqb9/29786935388.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=lcm+of+6+and+11
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e614.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE614 16792 bytes
font_01_sfnt_off0000fe26.bin
69a513cd68bcd2b132d52065712613256d122dba85075bc0766064c53c2d4f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE26 17292 bytes
font_02_sfnt_off00012b76.bin
6c7e1b754cf38ee70ad76cb780c90d71dc4ff6fc3e14eab78a91c98fc4406452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B76 16248 bytes
font_03_sfnt_off00014147.bin
f044ed5e35048c45c13d2ee270ca98f7718fe948a080aca92ad42fb712092b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14147 10180 bytes

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