Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f1a58cc49b4632…

MALICIOUS

PDF

100.4 KB Created: 2021-06-27 03:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e1dbd6063a87719227c08871f8f21fbe SHA-1: 79c7d291763cf3c6d9ba68d74880e7a56d1bcd36 SHA-256: d7f1a58cc49b4632be8629452681b9175d26e16c8ebc5e3a2ae12f357621769f
136 Risk Score

Malware Insights

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

The sample is a PDF document that functions as a link farm, directing users to various compromised websites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they are entitled to a prize or parcel, which is a common advance-fee fraud tactic. The numerous embedded URLs, many pointing to WordPress upload directories on potentially compromised sites, serve to distribute malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

Heuristics 6

  • 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://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/2cc48e09929d335e0439cad4fd182753/lefafaduremakoraduxe.pdf In PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/454f496581f776e599835723a2ad6fac/vovax.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c86010f42---folulexegarija.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/6db7002d6b7a321c4dd835424bd28499/92822611352.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/18196245724.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ca79d9cac---70282612325.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9783978230---nawatapafazanazibo.pdfIn PDF document text
    • http://cadeco.com/testingsites/advantage_aviation/assets/media/file/38019829411.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/88a4f54f00ad7ba33a476d95f6d0c421/kuwadoxisizurolili.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e375cad93---kemole.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/ae3860a6c4c9842db81aa82a74ec51b4/kavunejojodopedemufoviga.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607551c1f23dc---9590729220.pdfIn PDF document text
    • http://bclgrouptt.com/userfiles/file/nubewogaluzov.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ibnoempdko77vkvhbb9l4pgcg5/nemetapotipovofufijawuza.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b095b3b34---fobufijudejipekesusexuj.pdfIn PDF document text
    • http://le-bouquet.be/userfiles/files/desorivibefufogan.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6f352d4c7---zixofuvunotimanevabalev.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ef44b6005---79494469501.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/37f3f53ca79b8cdbaa5290832d507f78/84114850401.pdfIn PDF document text
    • http://china-zzld.com/uploadfile/file///2021062009423791.pdfIn PDF document text
    • http://aczelzalog.hu/tmp/fukixotaruvoxasawunufe.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a3113871dbd---41039275451.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/ndvnf3eu9jcq23hqr05s26484u/voxowiwov.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/hbemegarto2rld52qndjddnm20/vikitomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=black+blood+during+periodsPDF link annotation
    • 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_off00012771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12771 10976 bytes
SHA-256: 079d78f2f0f079724a2cd2db61ff1fe07b915a1f4d5cc47e796640f0b74f6b1a
font_01_sfnt_off00014095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14095 16768 bytes
SHA-256: 5ab66cad60f95e00add45582b07a1c34d81c3e5f42dbafda4ab63b3b6e812964
font_02_sfnt_off00016c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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