Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a12971d8465b96f…

MALICIOUS

PDF

492.9 KB Created: 2022-02-28 05:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: 8d935fda19cfe5e2c1611ab3b68f20ea SHA-1: af40525b6ef5be2cc5db3c27e4b00f8c869f172f SHA-256: 5a12971d8465b96fa164b19a749778c077fc562d1cc9d88a14a9f6554c20bb12
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6124

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://podar.co.za/XSRYdR1H?utm_term=crystal+reports+2016+system+requirements PDF link annotation
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616debd999c3c---ledijerubafogosemogiwib.pdfIn PDF document text
    • https://nikunjfoundation.org/ckfinder/userfiles/files/dojopulewevu.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161a9604f8f2a7---74813459300.pdfIn PDF document text
    • http://www.omniasubventio.sk/admin/ckeditor/kcfinder/upload/files/fatalexujogu.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/faxofapuzitasovulix.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/nebevisubo.pdfIn PDF document text
    • http://immobilieninvestors.org/userfiles/file/35175752681.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/a4ssnas0rchbe5jvbloild6cq7/56386990114.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/bbfeef6038f0b139c4f8602e933a0f34/feviravuterokak.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/98790034911.pdfIn PDF document text
    • https://iwanbim.com/userfiles/files/vadolef.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/07/25/file/xupasojidasilokegibazafam.pdfIn PDF document text
    • http://isleford.com/filespath/files/20210909045135.pdfIn PDF document text
    • http://music-saikung.com/ckfinder/userfiles/files/98346046926.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/jeduv.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/65aeabcd215154e03ef439dc1fc77561/xedevawuveburavoj.pdfIn PDF document text
    • http://lev-steklo.ru/userfiles/file/kabanopugiko.pdfIn PDF document text
    • https://bursaphotofest.org/uploads/files/ditit.pdfIn PDF document text
    • https://confeccionesruiz.cl/UserFiles/File/4182545685.pdfIn PDF document text
    • https://ibeguiristain.com/userfiles/files/fizudenofomawadigovaz.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_off00073862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73862 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00074f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F7D 21344 bytes
SHA-256: c24c10a8482fd573cb3837782d2c9d3401c5cac3243db7dbc0ff4b44b84601c0
font_02_sfnt_off00078837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78837 11264 bytes
SHA-256: bb78a7c1e14236dea1428bc20afa1dcf1116efbf119b05df40e9e9816aa81079