Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc91de67bbfeb06…

MALICIOUS

PDF

119.4 KB Created: 2021-08-13 17:38:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 9c66935a68b0d9044c1e5fd762a81dca SHA-1: 19ee06daf3091713e3e9b850627433078d7d1485 SHA-256: 1dc91de67bbfeb06563ad559e9f61d5a7aff0e6c28de67ec9491f7da07487bd3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://smidgel.ru/uplcv?utm_term=apply+marriage+certificate+online+andhra+pradesh PDF link annotation
    • http://gujaratbusinesspages.com/userfiles/file/masub.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/f84fb7095d18dac3f3ddc0723cdb6731/furoduji.pdfIn PDF document text
    • http://sam-global.info/files/file/1150306089.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d16bb0a214---kajanoxol.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb76507fdf---37952846422.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac68f16665---runubitilalid.pdfIn PDF document text
    • https://scalping.ir/data/files/file/56907966636.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/zaxaxufegukiv.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/28c393001abecafeffc6a5773fe4f716/zujuzapixurolixozop.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a223606904e---tasomesiwi.pdfIn PDF document text
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/03879acc6f6f8aa87d8fc8d90addbfb9/texopatupumomamejivo.pdfIn PDF document text
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/88856076490.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/94381825081.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/xudapal.pdfIn PDF document text
    • http://podushka.by/files/files/temop.pdfIn PDF document text
    • https://aduanaldelvalle.mx/userfiles/file/92038419159.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9f792f011---66675758381.pdfIn PDF document text
    • http://ambulanceservice.pl/userfiles/file/jiloxaxusidifawabux.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/b5b1c84a912fb07a16a13713242b25b4/10540199191.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/76136925316.pdfIn PDF document text
    • http://www.prieteniitehnicii.ro/documente/file/4248684135.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/wesefenijesoros.pdfIn PDF document text
    • https://www.borzabadi.com/ckfinder/userfiles/files/nutapikijugo.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/18109230347.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_off00016dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DD3 11164 bytes
SHA-256: c0600b5387c0aebeda5c2b3d1baa24e84bed8909648fe4594a7e706ebcd581a7
font_01_sfnt_off00018787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18787 17168 bytes
SHA-256: 9d056dedd103b0df3c01b04e1a42d9678e7e26c1051a2a715bbc169128d2d0ae
font_02_sfnt_off0001b44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B44B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1