Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2aa3e3ed1fdb8d8…

MALICIOUS

PDF

89.8 KB Created: 2021-07-07 01:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 64131e2f91220f9a160aee9278f187ea SHA-1: 1b8da4933862a8d4a45b35249388daafc5b23677 SHA-256: d2aa3e3ed1fdb8d84b08456758fa63a9694ed5d4c71969cfb33cd5ffd08fd625
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting an attempt to obscure malicious destinations. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 5

  • 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://garglob.ru/uplcv?utm_term=what+outfits+were+popular+in+the+90s PDF link annotation
    • https://wecareprogram.org/images/file/7577275542.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/10a6b399f4f6d13b7674f4817d9cf84f/naxawosusagowiw.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9761bfd24---69431397156.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/tofitupuganoranevi.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a8905b77222---waverojulenu.pdfIn PDF document text
    • http://smepil.com/ckeditor/userfiles/files/vobezonajavidijabedoruvok.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ea622d950---40289923288.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/58f44d9dfb363f2d8058af5fa6516611/96674047793.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160898b36dd0f1---41893610600.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160983d49dc83e---tilulixapiwuremexivotu.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/0ad9a273dc88bd24a0a94930264d5111/95121810571.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c76a754288---15429723631.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e0fb0614ee8---92492449964.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/j3m4jrdioggom6cddt1gt7hghk/garokitekewixosabemimufod.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c6f7d8e60---girudinaju.pdfIn PDF document text
    • http://golden-candies.ru/webroot/files/files/xijijarudifil.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/fe799bed31880d62e4e6a3420a920723/lopamibetekijemegazik.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/32555634488.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/10qsn00kqmnl3mp7b36dc8ric5/69307262387.pdfIn PDF document text
    • http://atya.eu/files/file/26093098996.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948d6b884e0---jaxovibugaxume.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/2b6b1411d9c914fcd1bb4e7b9c209552/rovemogi.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/64a42cb2e196154dd4a0a0ceaaf673e3/88498209448.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737720078ae---98541915424.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f85a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85A 17704 bytes
SHA-256: 7cc4a2891e101bc51e4f656900c3c2a5d751cbda9a7935745348267c31ee92b2
font_01_sfnt_off000126bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BD 10924 bytes
SHA-256: 6c0656ab87592b410192213db43aa66f6e5a8ebd095213e27339756c76952e87
font_02_sfnt_off00014014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14014 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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